Answer: b. apprehensive subject role.
Explanation:
The Apprehensive Subject Role refers to a situation where the subject/ participant feels uncomfortable about being researched.
Because of this, they might react in a way that they consider to be socially acceptable so that they don't look bad which means that they may give a response that they don't think to be true because they want to be accepted.
This is one of the roles a participant may assume.