D. Ecstasy. MDMA is the pure form of ecstasy.
You just gotta be more aware
It should be side chain, by looking at a diagram online, idk if im right, but it looks logical.
The correct answer is D. Avoiding high-risk situations
A could lead to a possible sexual encounter. B would just lead to confrontation. C is just dumb and would lead to potentially putting yourself in harms way.
If you avoid high risk situations where the chances of a sexual encounter are high you are more than likely able to successfully remain abstinent.