The medium is the component of the communication model that is responsible for transferring the message between two or more entities. The medium is the channel or the tool that is used to transmit the message from the sender to the receiver. The medium can be verbal, written, visual, or a combination of these. The medium can also be electronic, such as email, phone, or video conference, or physical, such as paper, board, or face-to- face meeting. The medium acts as a translator by converting the message into a form that can be understood by the receiver. The medium also influences the effectiveness and efficiency of the communication, as different mediums have different advantages and disadvantages, such as speed, cost, feedback, and noise. References: IIBA BABOK Guide v3, section 2.2.2.3, page 25; CBAP / CCBA Certified Business Analysis Study Guide, chapter 6, page 236; CBAP Business Analyst Exam Prep | Practice Quiz, question 256.

Decision analysis is a technique for identifying and evaluating the possible options for a given problem or situation. It involves defining the criteria, alternatives, and consequences of each option, and applying a decision-making method to select the best option12. Decision analysis can be used for assessing and recommending solutions that fit an organization's need for a new third-party sales tool, as it can help to compare the features, benefits, costs, and risks of different vendors or products. The other options are not techniques for identifying suitable options, but rather tools or methods for other purposes. A balanced scorecard is a tool for measuring and managing the performance of an organization or a solution3. A vendor assessment is a method for evaluating the capabilities and suitability of a potential vendor or supplier4. A process analysis is a technique for understanding and improving the current or future state of a business process

Before making a presentation about the requirements for a large software development project, Gary should determine an appropriate format for the presentation. This means he should consider the following factors:
* The audience: Who are the stakeholders that will attend the presentation? What are their roles, interests, and expectations? How familiar are they with the project and the requirements? How much detail do they need to understand the requirements?
* The purpose: What is the goal of the presentation? Is it to inform, persuade, or seek feedback from the stakeholders? What are the key messages and takeaways that Gary wants to convey?
* The time: How much time does Gary have to present the requirements? How can he allocate the time effectively to cover the most important and relevant aspects of the requirements?
* The tools: What tools and resources does Gary have to create and deliver the presentation? Does he have access to a projector, a laptop, a microphone, or a whiteboard? What software or applications does he need to use to create the presentation slides or documents?
* The style: How can Gary make the presentation engaging, clear, and professional? What visual aids, diagrams, charts, or examples can he use to illustrate the requirements? How can he use colors, fonts, images, and animations to enhance the presentation? How can he structure the presentation to have a logical flow and a strong introduction and conclusion?
By determining an appropriate format for the presentation, Gary can ensure that he communicates the requirements effectively and efficiently to the stakeholders, and that he addresses their needs and concerns.
References:
* How to Make Interesting Presentations for Software Projects, paragraphs 1-3
* How To Write The Software Development Project Brief, steps 1-7
* Complete Guide to Software Development Requirements, paragraphs 1-2

A model is a simplified representation of a complex reality that is useful for understanding that reality and making decisions regarding it. A model can describe a situation or problem, define boundaries for the business domain, describe thought processes and action flows, and other aspects of the requirements.
However, a model cannot define the resources that will be needed on the project team, as this is not part of the requirements but rather part of the project management plan. References: BABOK Guide v3, page 123; CBAP
/CCBA Study Guide, page 181.

The next step for the BA after selecting a passive approach for establishing performance metrics is to identify the performance measures. Performance measures are the indicators that are used to evaluate the effectiveness and efficiency of a process, a solution, or an outcome. They can be quantitative or qualitative, and they can be based on various criteria, such as time, cost, quality, customer satisfaction, or compliance. The BA should identify the performance measures that are relevant, measurable, achievable, and aligned with the objectives and requirements of the project. The BA should also define the baseline and target values for each performance measure, as well as the data sources and collection methods. References:
* CBAP / CCBA Certified Business Analysis Study Guide, 2nd Edition, Chapter 7: Solution Evaluation, Section 7.1: Measure Solution Performance, p. 307-308
* A Guide to the Business Analysis Body of Knowledge(BABOKGuide), Version 3, Chapter 7:
Solution Evaluation, Section 7.1: Measure Solution Performance, p. 267-268