Which of the following is considered a whole life policy?

A whole life policy provides coverage for the lifetime of the insured, as well as a cash value component that grows over time. Single premium life insurance fits this description because it is a type of whole life insurance where the policy is purchased with a single upfront payment. This policy will remain in force for the life of the insured and accumulate cash value, which aligns with the characteristics of whole life insurance.

In contrast, term life insurance provides coverage only for a specified period without any cash value accumulation. Universal life and variable life insurance are types of permanent life insurance but are more flexible and often have different investment components, making them distinct from the straightforward nature of whole life policies. Thus, the nature of a single premium life policy confirms its classification as a whole life policy, rendering it the correct answer.