Answer:
The correct answer is letter "A": cognitive dissonance.
Explanation:
Social psychologist Leon Festinger (1919-1989) described cognitive dissonance as the situation in which individuals feel discomfort as the result of unmatched expectations and the events that took place. According to Festinger, individuals constantly look for consistency to confirm their beliefs are true. Besides, people tend to avoid inconsistency because they lead to disharmony.