C seems like the correct answer

The purpose of the process of closing a project is to provide a fixed point at which acceptance of the project product is confirmed not a work package (a sequence of activities). It also provides a point to recognize that the objectives or the approved changes to the objectives, as established in the project initiation documentation, have been achieved.

B is correct, CP never process provides a "fixed point" for the receipt of completed Work Packages

B is correct. WP is irrelevant in CP

in CP: "Confirm that the project has delivered what is defined in the project product description, and that the acceptance criteria have been met." i believe C is correct

ITs B, not C. Closing a project is after controlling a stage and managing a stage boundary of the final stage, so its after the process where work packages are used. Martin77 is right.

I think B is the correct answer here. The Purpose of the Closing a Project process does not mention work packages, nor does it mention the final stage (final management stage): Reference 20.1 The purpose of the closing a project process is to provide a fixed point at which acceptance of the project's product is confirmed, and to recognize that objectives set out in the original PID have been achieved (or approved changes to the objectives have been achieved), or that the project has nothing more to contribute. The mentioning of work packages and "final stage" indicate that answer 1 is not correct, thus I think B is the correct option here.

C is correct the purpose of CP is: • To provide a fixed point at which acceptance for the project product is confirmed • To recognize that objectives set out in the original project initiation documentation have been achieved, • To recognize that any approved changes to these objectives have been achieved, • To recognize that the project has nothing more to contribute