Final answer:
Cognitive dissonance can be reduced by changing the level of dissonance, changing the conflicting attitude, or changing the behavior causing the dissonance. Therefore correct option is A
Step-by-step explanation:
Cognitive dissonance is a state of psychological discomfort that arises when a person's beliefs, attitudes, or behaviors are inconsistent with one another, leading to a conflict with their positive self-image. The following are ways to reduce cognitive dissonance: change the level of dissonance, change the attitude causing the dissonance, and change the behavior causing the dissonance. Ignoring the attitude causing the dissonance is generally not an effective method to reduce dissonance as it does not address the underlying conflict. To illustrate, an individual who believes smoking is harmful but continues to smoke can either quit smoking, thereby changing the behavior, or convince themselves that smoking isn't as harmful as believed, thereby changing the attitude.