Athletic recruitment : What data would you collect in order to prove this statement?Are there any terms that the researcher would have to define before proceeding?

Athletic recruitment

You have read a journal article with this as the statement: “A university athletic department that uses social media in athletic recruitment attracts higher-quality athletes than others who do not use social media.”

A.  What data would you collect in order to prove this statement?

B.  Are there any terms that the researcher would have to define before proceeding?