"poetic description" is the only real option from the list that is not common in expository writing, although careful descriptions can indeed be used as long as the point remains clear and forceful.
Answer:
The students are in the classroom.
Explanation:
It sounds incomplete, no real verb in the sentence.
I think it's B because she was too advanced for her class and told her not to read at home
Answer: A) Almost none of the students will be able to do this.
Explanation: since they all disagree to the argument, it's a likely possibility that none of them would want to tread that path as to argue something they don't want. They could only argue against the motion, but as it seems that was not the requirement.
