Which of the following can be used as an input for Define Scope?

In a real estate organization, two similar projects have been initiated.

During a review of the organization's active projects in March, 2018, it was found that project B may have challenges that were unidentified in project A. PM-B wants to know what went well so far in project A so that they may take preventive and/or corrective actions in project B.
What should PM-B request from PM-A to obtain access to this information?

Midway through a project, a project manager determined the project was running far behind schedule. The Project sponsor has agreed to release five resources to work on the project to meet the completion deadline. This is an example of:

At which stage of the project should certain factors such as the unavailability of human resources due to constraint be considered?

A project manager you are mentoring comes to you for help because he is about to face his first procurement audit. You might explain that he should not worry about such an audit because it: