Which of the following metrics demonstrates to a project manager if a project is overspending or underspending?

A project manager is successfully adhering to an eight-week project schedule through week three. A change in the marketplace will require the project manager to deliver the product one week early.

Given the project schedule above, which of the following aspects are missing for the project manager to plan and execute an accelerated schedule? (Choose two).

A project is approaching its end when the project manager is informed that a deliverable is exceeding the upper noise limit set by the legislation of the country where it was implemented.
Which of the following constraints has MOST likely been overlooked?

A project scheduler has calculated the project's critical path. Which of the following activities would most likely occur NEXT?

During the execution phase, the project manager discovered that the testing phase is dependent on completion of the vendor's tasks. The project team has just informed the project manager their activities are almost complete, and they would like permission to begin testing. The vendor is not scheduled to deliver the products for two months.
Which of the following should have occurred to prevent this issue?