Answer:
c. Research about aptitude testing
Explanation:
Aptitude test: In psychological testing, an "aptitude test" is defined as a test that refers to a "systematic testing process" in order to test a candidate who is willing to get a job by analyzing his or her capabilities on performing particular tasks and therefore reacting on a variety of various situations.
Every test which is being administered on the candidate is said to have a "standardised method" for scoring and administration with respect to the quantified results and one candidate's test score is being compared with other candidate's score.
In the question above, the given statement signifies the research related to aptitude testing.
