Which life annuity contract feature provides that benefit payments will continue for a minimum number...

Comprehensive and Detailed Step by Step Explanation:

A “period certain” provision ensures payment for a specified period regardless of whether the annuitant survives:

Period certain (B) guarantees payments for a set number of years, protecting beneficiaries.

Cost recovery (A) and refund options (C and D) relate to refunding premiums or unpaid amounts but do not guarantee a payment period.

References: Maryland Annuity Regulations, Payment Options.