For instance say you're an adult and you get out of a cult. You're figuring out what to do next and evidence leads you to reason. Naturally, would you choose to follow reason compared to the the other options available?
I think it becomes an issue of semantics. I think a better way to phrase it would be, "I believe that following reason is the most effective course, so I choose to follow it." You can believe that reason is the best course yet choose not to follow it, or you can believe that some other option is better than reason, but you don't choose to believe that reason is the best course, you come to believe it because that's where the evidence led you.
If we drop the quibbling over the word "choose" I think most atheists have given similar answers to your question; that's where the evidence led.