Parking at a University Has Become a Problem

Parking at a university has become a problem. University administrators are interested in determining the average time it takes a student to find a parking spot. An administrator inconspicuously followed 200 students and recorded how long it took each of them to find a parking spot. Identify the variable of interest to the university administration.

A) number of empty parking spots
B) number of students who cannot find a spot
C) time to find a parking spot
D) students who drive cars on campus