A phase gate review is a process that must be performed at the end of each project phase to determine the completeness of the project work and to gain the customer's acceptance to move the project forward. A phase gate review is also known as a stage gate review, a milestone review, or a toll gate review. The purpose of a phase gate review is to evaluate the project's performance, risks, issues, deliverables, and alignment with the business objectives and requirements. A phase gate review also provides an opportunity to decide whether to continue, modify, or terminate the project based on the current status and expected outcomes. References:
* CBAP / CCBA Certified Business Analysis Study Guide, 2nd Edition, page 47
* CBAP / CCBA Certified Business Analysis Study Guide, 2nd Edition, page 47
* CERTIFIED BUSINESS ANALYSIS PROFESSIONAL, page 6
* Business Analysis Professional Resources | IIBA, under Standards, Regulations, and Best Practices

Relaying upper management support to stakeholders is a way to reduce employee discontent and resistance to change. This can help the employees feel more confident and secure about the change initiative, as they perceive that the leaders are committed and supportive of the change. It can also help the employees understand the vision and goals of the change, and how it aligns with the organizational strategy and values.
By communicating the benefits and rationale of the change, and addressing the concerns and fears of the employees, the BA can foster a positive and collaborative attitude towards the change among the stakeholders. References:
* Emotional Reactions to Change in the Workplace, CMI
* Reactions to Change in an Organization, Wonder
* IIBA BABOK Guide, Section 5.5, Assess Organizational Readiness

The project manager is the stakeholder who is responsible for writing the project scope. The project scope is a document that defines the work that needs to be done to deliver the project, including the objectives, deliverables, milestones, resources, and constraints. The project manager is the person who leads and coordinates the project team, plans and monitors the project activities, manages the project risks and issues, and communicates with the project stakeholders. The project manager works closely with the business analyst, who is responsible for writing the solution scope, which defines the features and functions of the solution that will address the business need. The project manager also consults with the domain subject matter expert, the implementation subject matter expert, and the sponsor, who are stakeholders who provide input, feedback, and approval for the project scope and the solution scope. References:
* Project Scope Management: What It is and Why It's Important, paragraph 2
* What is Project Scope? Definition, Example, & Project Scope ..., paragraph 1
* Project Scope vs. Solution Scope: What's the Difference?, paragraph 1
* [Project Manager vs. Business Analyst: What's the Difference?], paragraph 1

The lead BA should implement key performance measures to identify areas of improvement, as this is the most effective way to assess the current state of the business analysis practices and the value they deliver to the organization. Key performance measures are quantifiable indicators that reflect the critical success factors of a project, process, or activity. They can be used to evaluate the quality, efficiency, and effectiveness of the business analysis deliverables and outcomes, as well as the satisfaction and engagement of the stakeholders.
By measuring and analyzing the key performance indicators, the lead BA can identify the gaps, issues, and opportunities for improvement in the business analysis practices, and propose solutions to enhance them.
The other options are not the best actions to take. A BA time tracking system may help to monitor the effort and duration of the business analysis activities, but it does not provide information on the quality and value of the deliverables and outcomes. Templates for BAs to use may help to standardize and document the business analysis deliverables, but they do not ensure the alignment and agreement of the requirements and the stakeholder needs. Workload plans of the BA may help to manage the resources and priorities of the business analysis activities, but they do not measure the impact and benefits of the business analysis outcomes.
References: The answer can be verified from the following sources:
* A Guide to the Business Analysis Body of Knowledge(BABOKGuide) Version 3, Chapter 2:
Business Analysis Planning and Monitoring, p. 40-41, 48-49, 51-52.
* Business Analysis for Practitioners: A Practice Guide, Chapter 4: Requirements Life Cycle Management, p. 93-94, 97-98.

A capabilities gap assessment is a process of identifying and analyzing the gaps between the current and desired capabilities of an organization. It helps to determine what new capabilities are needed to achieve the business goals and objectives, and to seize the business opportunities1. A business opportunity is the chance to take advantage of an occurrence in the market for business gain. It involves some kind of favourable condition that can be used to create and implement ideas and innovations, solve problems, and maximize profits2.
If an organization does not have the necessary resources and technology to seize a business opportunity, the most likely course of action is to launch a new project. A project is a temporary endeavor undertaken to create a unique product, service, or result3. By launching a new project, the organization can allocate the required resources and technology, define the project scope, schedule, and budget, and deliver the desired outcome. A new project can also help the organization to close the capabilities gap, improve its performance, and gain a competitive advantage in the market.
The other options are less likely or not feasible. Hiring additional resources or contractors may not be enough to close the capabilities gap, as they may not have the relevant skills, knowledge, or experience. Moreover, hiring may incur additional costs and risks for the organization. Moving onto the next opportunity may not be a wise decision, as it may result in losing a valuable chance to grow the business and satisfy the customer needs. Therefore, launching a new project is the best course of action for the organization. References:
* Capabilities Based Assessment (CBA) - AcqNotes
* What Is Business Opportunity? - Importance, Types ... - Feedough
* Project Management Basics: What Is a Project? | PMI