dropping my only ap?

<p>I'm a really good student when it comes to understanding facts, but ask me a critical reading question and I have trouble. My gpa is really good and I decided to take ap environmental not knowing that the teacher doesn't teach and gives tests that are mostly critical reading. I'm having a real hard time. Should I drop it? How bad does it look to drop a course in the senior year when college apps are going out? Is it better to suffer through and get my only C? Does it send up a red flag that I can't handle college work?</p>