The correct answer is: Event.
A rider benefit is a supplemental benefit that is added to a life insurance policy. It is typically designed to provide coverage for a specific event or circumstance, such as critical illness, disability, or accidental death. Rider benefits are typically subject to policy terms and conditions, and they may have additional fees or restrictions.
Option A: Contract is incorrect because a rider benefit is not a contract in itself. It is a supplemental benefit that is added to a life insurance policy.
Option B: Event is the correct answer because a rider benefit is payable subject to policy terms and conditions on the occurrence of a specified event.
Option C: Health is incorrect because a rider benefit is not a health benefit. It is a supplemental benefit that is added to a life insurance policy.
Option D: Condition is incorrect because a rider benefit is not a condition. It is a supplemental benefit that is added to a life insurance policy.