Fernando's favorable attitude toward capital punishment began to change when he was asked to offer arguments opposing it in a university debate class. his attitude change is best explained by theory.

The attitude of Fernando is best explained by the cognitive dissonance theory which is the one responsible for the person to gain the consistency with their beliefs, opinions, etc. With Fernando's attitude of changing from capital punishment to opposing argument best describes the said theory.

Ibelieve that the answer is (a).