The type of mortgage that requires the borrower to pay interest only during the terms of the mortgage is...

The type of mortgage that requires the borrower to pay only interest during the term of the loan is known as a straight loan. In this arrangement, the borrower makes interest payments for the duration of the loan term and repays the principal in a lump sum at the end of the term. This structure can be beneficial for borrowers who need lower payments initially or are investing in properties with expected appreciation.

In contrast, an amortized loan involves payments that go toward both principal and interest throughout the term of the loan, leading to a gradual reduction of the principal balance over time. A ground lease is a separate real estate arrangement where one party rents land from another party, and a construction loan is typically a short-term loan specifically for financing the construction of a property. These options do not reflect the nature of the payment structure described in the question.