6230. The poetic art of Keats reached consummation at the end of his poetic career.

✅ The correct answer is option C.
Failure : lack of success.

Deterioration : the process of becoming progressively worse.

Completion : the action or process of completing or finishing something.

Frivolity : lack of seriousness; light-heartedness.

Consummation : the point at which something is complete or finalized.

Synonym of Consummation is Completion