Final answer:
A c. mortgage is a type of lien on real estate that is used to secure a loan for the purchase of the property.
Step-by-step explanation:
A lien is a legal claim or right against a property to secure a debt or obligation. In this case, the correct answer is c. c. Mortgage.
A mortgage is a type of lien on real estate that is used to secure a loan for the purchase of the property. The lender holds a mortgage lien, which gives them the right to take the property if the borrower fails to repay the loan.
Examples of other types of liens on real estate include tax liens and mechanic's liens.