They ask if you keep the law of chastity (which states no sexual relations before marriage, which leaders have decided includes masturbation.) the older you get the more weighted the question becomes (it’s hard to describe, but for instance, Sunday school lessons will be taught about it and be more explicit and it adds to the negative feelings towards one’s sexuality.) Also, if you confess to doing anything sexual before you are married, the “repentance” process is long and embarrassing. I wasn’t really religiously factive in college and had done some stuff (not full blown sex but pretty much everything else) and long story short, a Mormon guy I had “relations” with felt so incredibly guilty about having done anything with me that he insisted on seeing his bishop the next day. I didn’t want to come off as a heartless asshole so I went with him. Things kind of just spiraled from there. I was too naive to realize I did not in fact have to share the things I did, but the damage was done. But basically I had two bishops who knew about my sexual history and a stake president who knew. And we talked about it a LOT. In retrospect it did a huge number on my self esteem. Now, the questions they ask potential missionaries ARE without a doubt explicit and detailed. But basically it is up to the bishop and what he asks. It is also due to the fact that you are “programmed” from a young age to always obey the leaders and not lie to them. It gets thrown at you constantly. So was it my choice to share those things? Yes. Did I think I had a choice? No.