What should the business analyst do to ensure that all requirements meet a quality checklist before the development and testing phase?

Which technique or tool is used to obtain acceptance of the delivered product?

Which of the following is an example of a functional requirement?

In order to reduce product and project risk for a large, complex project, a business analyst is asked to help develop a change process that includes formal authorization and tracking throughout the life cycle of the project. The business analyst needs a capability that will help ensure that the product conforms to approved requirements, changes can be documented, and the status of each change can be reported.
What should the business analyst use?

A business analyst has been assigned to Project Y. After a requirements gathering session, the project manager asks the business analyst to identify which requirements would be considered in scope and out of scope, based on the business need.
What document should the business analyst use to determine the relationship of the requirement to the business need?