He worked feverishly for a little less than an hour, at the end of which he found he had solved every problem in every branch of higher mathematics that had ever puzzled either him or any of the great mathematicians of the land. Which context clue is most helpful in determining the meaning of the underlined term?
A. Assume that feverishly is a synonym of problem.
B. Assume that feverishly is an antonym of problem.
C. Consider how you would feel while doing math homework.
C. Consider how somebody would have to work to solve a huge number of math problems in an hour.