Answer:
B. correlational research.
Step-by-step explanation:
Correlational research is a type of non-experimental research in which researchers measure two variables and establish a statistical relationship between them (correlation), without the need to include external variables to reach relevant conclusions. In the case shown in the question above, we can say that Dr. Little's research is a correlational research, since he is evaluating the relationship between two variables, which is the relationship between people's age and conservative policies.