Zachariah Was Not Sure That He Was Ready for His

Zachariah was not sure that he was ready for his midterm exams, but once he started the exams, he found that he was able to accurately recall the information he had learned that related to each question. The main memory process that accounts for the fact that Zachariah could access and utilize the information in his memory is

A) encoding.
B) storage.
C) retrieval.
D) rehearsal.