Dr. Jennings is doing a study on the experience of being a racial minority on a college campus. He goes to the Asian Student Association, Black Student Union, and Hispanic Student Group on his campus to recruit participants for his study. Dr. Jennings only includes Asians, African Americans, and Hispanic participants in his study. Which type of sampling is Dr. Jennings using?a. quota sampling
b. cluster sampling
c. systematic sampling
d. purposive sampling

Purposive sampling is an independent way of sampling where the researcher can rely independently on his/her judgement while selecting the members of the sampling population.

When a researcher wants to study a particular group of individuals, the researcher can use purposive sampling so that he/she does not have to study the whole population who does not fit the frame.

Here, Dr Jennings recruited only recruited Asians, African Americans, and Hispanic participants because is doing a study on the experience of being a racial minority on a college campus. Since the other population would have very little or no experience of being a minority, they are not being taken into account.