An attractive 20 year old female named Cynthia arrives at Garret's dorm room door. Garret answers door and is immediately struck by Cynthia's beauty. She asks him if she can have few minutes of his time in order to complete quick survey. He guesses that she is probably doing a survey regarding a political cause. Cynthia asks her first question, "how significant is the environment to you"? In this scenario, we clearly need to be worried about...
A. the halo effect on measurement error
B. the potential problems caused from sampling error
C. non-response error
D. coverage error
E. none of the above, it's college what do they need to be worried about