Final answer:
A proposed requirement status indicates that the requirement has been requested by an authorized source and is awaiting evaluation or approval. It is not yet approved, completed, or planned for implementation.
Step-by-step explanation:
If a requirements status is proposed, then it C. Has been requested by an authorized source. When a requirement is listed as proposed, it signifies that someone with the authority to suggest changes or additions has brought it up for consideration. This does not automatically imply the requirement is approved, nor does it indicate the work is complete or that it was considered and not planned for implementation. Rather, it is in a stage of evaluation or awaiting approval before being formally acted upon in the project scope.