Susan Is a Very Bright College Student and Does Well

Susan is a very bright college student and does well in all of her classes, except for one.She is unable to graduate because she keeps withdrawing from speech class.The few times she has actually tried to present her well-written speeches, she has started shaking and sweating, her voice would quiver, and then she would completely lose her train of thought.She would then leave the classroom and withdraw from the speech class.Susan would be diagnosed as having a(n)

A) panic disorder.
B) acute stress disorder.
C) social phobia.
D) generalized anxiety disorder.