This question is missing the options. I've found the complete question online. It is as follows:
In order to determine if and how discrimination affects hiring decisions, sociologists conduct studies in which they send paired actors to apply for real jobs. The actors are equal in every way aside from race. What are these studies called?
A. Audit studies
B. Ethnography
C. Survey studies
D. Conversion analysis
Answer:
These studies are called A. audit studies.
Step-by-step explanation:
Audit studies are used in several areas, such as sociology and political science, to test discrimination and unequal treatment. This type of study uses actors or otherwise trained people to apply for the same sets of opportunities - jobs, housing vacancies, etc. Those actors are matched in all characteristics, except for the one that is being tested for discrimination. In the case described in the passage, they are equal in every way aside from race. Another possibility, for instance, would be gender difference, but equal education, experience, and so on.