Final answer:
A mortgage lien is a specific and voluntary lien that applies to the property secured by a debt.
Step-by-step explanation:
The specific lien that applies to the property secured by a debt and is voluntary is a mortgage lien.
A mortgage lien is created when a property owner voluntarily enters into a contract with a lender (such as a bank) to borrow money in exchange for the lender's right to take the property as collateral if the borrower fails to repay the loan.
This type of lien is specific to the property that is being used as collateral and is considered voluntary because it is initiated by the property owner who willingly enters into the mortgage agreement.