<p>
It doesn't exist
Only poorly written questions can be answered this way, and all the questions on an AP exam have been reviewed by 8 or 9 people, several of whom review questions for a living and have read all the books -- Kaplan, PR, 5 steps to a 5 -- so they are well-up on all the "tricks" that are supposed to work. Here is the only secret to getting a good score:
Know the Stuff!!</p>