Which of the following represents a function? A.(2, 3), (4, 3), (-2, -3), (-4, -3)
B.(3, 4), (-3, 2), (3, 8), (5, 5)
C.(-1, 2), (-2, 1), (-1, -2), (-2, -1)
D.(5, 1), (5, 2), (5, 3), (5, 4)

Kilgore trout creates a new scale to diagnose depression. however, his scale only assesses one symptom of depression while ignoring others. which of the following is his new scale most likely lacking? a) test-retest reliability b) discriminant validity c) criterion validity d) alternate-forms reliability e) content validity f) none of the above