Is there a litmus test for choosing best answer?

you can choose only ONE best answer per question. ONE. So, what is that guy talking about up there? ^^^ ALSO, I don't know the answer to this question. But it seems very important. This is what I do know tho, if there is NOT a litmus test for choosing BA, then that is okay. You in your infinite wisdom need no help. You always choose wisely and save the day. You are great. You are KENNY!