Hi, the answer that makes the most sense would be A). Drug Tests do not "Catch" many people. Answer choice B & C can be easily eliminated and that leaves A & D. With D not actually being a known fact I would go with A. Hope this was correct & helped you :)
Side effect
side effect is an effect, whether therapeutic or adverse, that is secondary to the one intended
I'm honestly not sure, but I believe the answer is C. Sorry if I'm wrong. I can do some research and get back to you.