What’s actually the answer though? I would think A, D, C in that order is probably best, but I’m guessing they just want C?

It’s not difficult.

A is wrong because whoever wrote this is in no position to evaluate if the person reading it is capable of “to check if the gun is loaded” without blowing their own head off.

D is wrong because the person whoever wrote this is in no position to evaluate if the person reading it is capable of “hold the gun personally” without blowing their own head off.

C is the only correct answer.