How the pic
is it nice or dumb

What is the answer to the question 5x+2x

Me i’m stuck on all these questions besides the two bottom ones

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