Hamid Is Conducting a Research Study to Test the Response

Multiple Choice

Hamid is conducting a research study to test the response of people standing in line when someone cuts in. At a crowded   shop, a woman cuts the line just in front of the third person. Later, a man cuts in at the same spot in the line. Hamid notes the response of the person in the line when the lady cuts in (harshly spoken warning) and when the man cuts in (roughly pushed aside) . In this scenario, the woman and the man who cut the line are Hamid's _____; they are secretly helping him conduct the experiment.

A) accomplices
B) allied respondents
C) infiltrators
D) behaviorists