Ammar,a Researcher,studies About the Possible Links Between Wealth and Popularity

Multiple Choice

Ammar,a researcher,studies about the possible links between wealth and popularity.He finds that popularity increases with wealth.Which of the following statements is most likely true about this scenario?

A) Ammar adopts the method of stratified sampling.
B) Ammar adopts the method of random sampling.
C) Ammar conducts experimental research.
D) Ammar conducts correlational research.