Which of the following describes a mortgage that requires principal and interest payments at regular intervals until the debt is satisfied?

An amortized mortgage is specifically designed to ensure that both principal and interest payments are made at regular intervals, systematically reducing the loan balance over time until the debt is fully paid off by the end of the loan term. This type of mortgage offers a clear repayment structure where the borrower makes equal monthly payments, and each payment contributes to decreasing the principal amount while covering interest costs as well.

In the context of the options provided, while a balloon mortgage involves regular payments that may not cover the full principal amount, leading to a large final payout, the adjustable rate mortgage adjusts interest rates periodically but maintains a repayment schedule that may not fulfill the requirement for consistent principal repayment. Negative amortization mortgages allow the balance to grow rather than shrink because payments do not adequately cover the interest, resulting in an increasing loan balance. Therefore, the most accurate description of a mortgage that requires principal and interest payments consistently over time is the amortized mortgage.