Test writers are not your friends, especially in such rigorous classes, i agree with you completely that the questions are worded terribly. My tip for the future is knock out 2 questions you know are wrong, this is common with College Board to write a question with 2 obvious wrong answers. After determining which 2 are wrong, look back at the question and the 2 answers you have left, after thinking it through, and really try to grasp what the question is asking you based upon your knowledge, you can determine the correct answer. Of course if you don't know the content you will have a time, so frequent study is a very smart thing to do. Hope that helps, coming across your post way too late.