Final answer:
The most likely missing clause is the Due-on-Sale Clause. Option B.
Step-by-step explanation:
The most likely missing clause from the security instrument for the property in question is the Due-on-Sale Clause. This clause allows the lender to demand full repayment of the loan if the property is sold or transferred to a new owner.
An Acceleration Clause allows the lender to demand immediate repayment of the entire loan if the borrower fails to meet certain conditions, such as making timely payments.
An Alienation Clause prohibits the borrower from transferring or selling the property without the lender's consent.
A Subordination Clause specifies the priority of different liens on the property. Option B,