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

A subordination clause typically alters the priority of a mortgage in relation to other debts secured by the same property. This clause does not prevent assumption; instead, it allows a lender to agree to subordinate its claim to a subsequent mortgage, ensuring that the original mortgage remains in a preferred position. Therefore, it does not serve to prohibit assumption.

An acceleration clause allows the lender to require full repayment of the outstanding balance if certain conditions are met, such as missed payments. While it can accelerate the loan repayment process, it does not inherently prevent the assumption of the mortgage by a new borrower. Its primary function is related to the timing of payments rather than ownership transfer.

Amortization refers to the process of gradually paying off a loan through scheduled payments over time. This clause relates to the repayment structure and does not address the transferability of the mortgage to another party. Thus, it does not prohibit assumption and is unrelated to the transfer of ownership.