A policyowner buys a term policy in which the death benefit steadily declines over the years while the premium stays level. This is commonly used to cover a mortgage. What is it called?

解析

Decreasing term has a death benefit that reduces over the policy period while the premium remains level, making it a natural fit for a declining debt such as a mortgage. Increasing term does the opposite, with a benefit that grows over time. Level term keeps both the face amount and premium constant. Return-of-premium term is level term that refunds premiums if the insured survives the term; it does not have a declining benefit.