Shania is an I/O psychologist who spends her time designing surveys that supervisors can use to evaluate their subordinates. She also compiles results from these surveys and provides suggestions to supervisors about how to deal with employees who are underperforming. Shania's work primarily involves which area of emphasis?

A) selection
B) organizational development
C) performance appraisal
D) quality of work life

Ans: C) performance appraisal