Correct Answer: nemesis

Solution : The fourth option is the correct choice.

Nemesis refers to the downfall or punishment that is seen as a consequence of one's actions and is often considered to be the result of natural justice. It represents the idea of retribution or divine justice for wrongdoing.

The meanings of other options are as follows:

• A paradox is a statement or situation that appears contradictory but may be true.
• A climax is the highest or most intense point in a series of events.
• Catharsis is the process of releasing strong emotions, often through art or drama.

Therefore, the correct answer is nemesis.