In literature, the term epiphany refers to
a. a holiday shortly after christmas
b. a church ceremony
c. a moment of sudden insight
d. the appearance of something that had previously been invisible

In literature, the term epiphany refers to (C) a moment of sudden insight. The character come to a point of realization. He or she is aware or has a feeling of knowledge after series of events that made him or her reaches that point where he or she thought of deep knowledge.

This is called adduction