The best way to prevent the misconfiguration from recurring is to grant user access using a role-based model. A role-based access control (RBAC) model is an access control method that assigns permissions to end-users based on their role within the organization1. RBAC provides fine-grained control, offering a simple, manageable approach to access management that is less error-prone than individually assigning permissions1. RBAC also enforces the principle of least privilege, which means that users only have the minimum access required to perform their tasks2.
A role-based model can help prevent segregation of duties (SoD) issues in an ERP system by restricting user access to conflicting activities within the application. SoD is a central issue for enterprises to ensure compliance with laws and regulations, and to reduce the risk of fraud and unauthorized transactions3. SoD requires that no single individual or group of individuals should have control over two or more parts of a process or an asset3. For example, a user who can create and approve purchase orders should not be able to process payments or modify vendor records.
By using a role-based model, user access provisioning is based on the needs of a group (e.g., accounting department) based on common responsibilities and needs1. This means each role has a given set of permissions, and individuals can be assigned to one or more roles. For example, you may designate a user as an accounts payable clerk, an accounts receivable clerk, or a financial manager, and limit access to specific resources or tasks. The user-role and role-permissions relationships make it easy to perform role assignment because individual users no longer have unique access rights, rather they have privileges that conform to the permissions assigned to their specific role or job function1.
The other options are not the best way to prevent the misconfiguration from recurring. Monitoring access rights on a regular basis (option A) is a detective control that can help identify SoD issues after they occur, but it does not prevent them from happening in the first place. Referencing a standard user-access matrix (option B) is a tool that can help document and analyze user access rights, but it does not ensure that the user access rights are configured correctly or consistently. Correcting the segregation of duties conflicts (option D) is a corrective action that can resolve SoD issues once they are detected, but it does not prevent them from happening again.
References: 3: Implementing Segregation of Duties: A Practical Experience Based on Best Practices 1: What is Role-Based Access Control (RBAC)? Examples, Benefits, and More 2: What is Azure role-based access control (Azure RBAC)?

A staging environment is a replica of the production environment that is used to test and verify software before deploying it to production. A staging environment is most likely to have the same software version as production, as it mimics the real-world conditions and configurations that will be encountered in production.
A testing environment is a separate environment that is used to perform various types of testing on software, such as functional testing, performance testing, security testing, etc. A testing environment may not have the same software version as production, as it may undergo frequent changes or updates based on testing results or feedback. An integration environment is a separate environment that is used to combine and test software components or modules from different developers or sources, to ensure that they work together as expected.
An integration environment may not have the same software version as production, as it may involve different versions or branches of software from different sources. A development environment is a separate environment that is used by developers to create and modify software code. A development environment may not have the same software version as production, as it may contain unfinished or untested code that has not been released yet.

The best approach from a risk management perspective when implementing a large and complex data center IT infrastructure is to use a deployment plan based on sequenced phases, as this will allow the organization to break down the project into manageable and measurable stages, and to monitor and control the progress, quality, and outcomes of each phase12. A phased deployment plan can also help to reduce the risks of errors, failures, or disruptions that could affect the entire infrastructure, and to implement corrective actions or contingency plans as needed34.
References
1: Data Center Project Planning: A Guide to Success2 2: Data Center Project Planning: A Guide to Success4 3: Data Center Migration: A Step-by-Step Guide3 4: Data Center Migration: A Step-by-Step Guide1