Posing a question

My Dungeons and Dragons character has the opportunity to ask a magical dragon born a question.  Any single question.

I thought I might meta game the system, but that feels a bit unfair on the DM.  I have a suspicion the character and mine share a trait, but if I'm wrong in that assumption, it’s a waste of a question.  She also super does not trust this guy, so I also want to ask what we owe him in return, just to double check on the bargain made upon entering his home, but, on the other hand...  She's got a problem to solve, she doesn't really know where to start, asking his advice may be the most straightforward choice, but doesn't take in to consideration that she doesn't trust him much at all.

I think she'll ask what advice he would give himself in her place.  I've found most people show you more about themselves in the advice they give than anything else, so that'll tell her what she wants to know about him and let her sort herself out, too.  Or, she could just ask him if he can read the language in her letter that she can't, he'll say no, question wasted and she'll be no worse than when she started.

It’s set me wondering, if I could ask any question, and be reasonably certain of getting at least a halfway decent answer, what would I ask?  Am I going to be OK?  No, because of course I will.  Until I'm not.  That’s how it works. Which choice is the best?  I worry enough weighing my options that the path I take is the one I'm convinced is right.  Even with the multiverse of possibilities stretched out ahead and behind me, this is the universe I've chosen to create.  I don't believe this is the best of all possible universes, but why would I make one that isn't?

Separate question.  Also, mixing Candide and quantum physics is possibly not the best choice, philosophically speaking.