Rationalization is a defense mechanism where a person justifies a failure with a seemingly logical reason instead of accepting the real cause—in this case, not studying. It's a way to protect self-esteem.
Option A: Conversion – Psychological condition involving repressed conflict turning into symptoms.
Option B: Sympathism – Not a recognized psychological term.
Option C: Rationalization – Correct; making excuses to justify failure.
Option D: Compensation – Involves making up for a weakness by excelling elsewhere.