Which of the following best describes why a project manager would decide to sign a...

A Fixed-Price Contract is most suitable when the project scope, requirements, and deliverables are clearly and thoroughly defined. This contract type sets a predetermined price for the work, regardless of the actual costs incurred, transferring the risk of cost overruns to the vendor. It is advantageous when the project details are well-understood and unlikely to change.

Per the CompTIA Project+ PK0-005 exam objectives, under Domain 1.11: Explain important project procurement and vendor selection concepts, understanding when to use fixed-price contracts is essential, particularly when the project scope is well-defined.