Which of the following types of mortgage clauses is intended to prohibit the assumption of the mortgage?

A subordination clause allows a lender to take a secondary position to a new loan in the event of refinancing. This clause does not prohibit assumption; rather, it relates to the priority of claims on the property in case of default. Therefore, it does not serve the function of preventing mortgage assumption.

An acceleration clause enables the lender to demand full repayment of the outstanding loan balance under certain conditions, such as missed payments. While it may affect the mortgage's enforceability, it does not specifically prohibit the assumption of the mortgage by another party; instead, it addresses the lender's rights in the face of borrower default.

Amortization refers to the gradual repayment of a loan through scheduled payments over time. This process does not relate to assumptions of the mortgage and is primarily concerned with the repayment structure. Thus, it holds no relevance to whether or not the mortgage can be assumed by another party.