Final answer:
Rationalization is the defense mechanism where someone justifies their thoughts or behaviors by substituting acceptable reasons for less-acceptable real reasons.
Step-by-step explanation:
The correct answer is Rationalization.
Rationalization is the defense mechanism where someone justifies their thoughts or behaviors by substituting acceptable reasons for less-acceptable real reasons.
For example, if a student fails an exam, they may rationalize the failure by saying that the test was unfair or that they didn't have enough time to study, rather than accepting the truth that they did not study enough. By rationalizing, they can avoid facing the reality of their actions and protect their self-esteem.