"Voter Apathy in the Last Election Was Greater Among White-Collar

Multiple Choice

"Voter apathy in the last election was greater among white-collar workers than among blue-collar workers." To differentiate the occupations of workers as "white-collar" and "blue-collar", a researcher would most likely use a(n)

A) interest inventory.
B) rating scale.
C) situational test.
D) performance test.