Question

plaintiff has the same or almost the same meaning as:
evolutionist
resident
complainant
retainer

Explanation:

In legal - related language, a "plaintiff" is the person who initiates a lawsuit. A "complainant" is also a person who makes a complaint, especially in a legal context. The other options have different meanings. "Evolutionist" relates to the theory of evolution, "resident" refers to a person living in a particular place, and "retainer" can refer to a fee paid in advance or a person who holds something in place.

Answer:

C. complainant