I think what they’re asking is ‘how do I shoot someone without killing them?’ Yes, there is no safe way, but you’re not really explaining WHY. Probably something to do with the possibility of hitting veins/arteries, organs, etc, I’d guess?
That’s the basic gist of it. Also, we have talked about gunshot wounds before; here, and here. We even have a tag on the subject. (It actually manages to make the tag cloud with 12 entries… I should probably switch that to alphabetic sorting for everyone’s convenience.) The short version is that bullets have a nasty habit of doing unexpected things. It’s not exactly random, but there’s way too many variables to predict in the field, meaning any bullet could turn your internal organs into goulash. Even under the best circumstances, any untreated gunshot wound can result in death.
This is before you even get into weirdness like hydrostatic shock, which might not be an actual thing. Though, I do need to expand that tag, and might need to do a more detailed post on it, because I know I’ve talked about it more than once.