Short answer: Yes, one can be subtly proactive if need be, but the test giver probably means: publicly zealous, aggressive, promotional, or just plain loud.
The comprehension test uses a poorly written text, which implies either:
1) The test author can't tell good prose from bad.
2) The test author is testing the student's ability to slog through poorly written text.
Using the widely deprecated term proactive tends to imply '1)'. But as a student, you're stuck with this test, so perhaps the best advice would be to pass your test, don't use the word proactive if at all possible, and avoid insulting any potential benefactors who do use it:
Network Executive Lady: We at the network want a dog with attitude.
He's edgy, he's "in your face." You've heard the expression, "let's
get busy"? Well, this is a dog who gets "biz-zay!" Consistently and
Krusty: So he's proactive, huh?
Network Executive Lady: Oh, God, yes. We're talking about a totally
George Meyer: Excuse me, but "proactive" and "paradigm"? Aren't these
just buzzwords that dumb people use to sound important? Not that I'm
accusing you of anything like that. [pause] I'm fired, aren't I?
Roger Myers Jr.: Oh, yes.
-Simpson's season 8, episode 14.