Final answer:
An example of an involuntary lien is a Mechanic's lien. This type of lien is placed on property without the owner's consent, typically due to legal action such as unpaid debts for services rendered.
Step-by-step explanation:
An example of an involuntary lien is a (C) Mechanic's lien. An involuntary lien is one that is placed on property without the consent of the property owner, often as a result of legal action. In contrast, a mortgage is a voluntary lien; it is a security interest in real property held by a lender as a security for a debt, usually in the form of a loan contract and agreed upon by the borrower, denoting voluntary consent.
A lawsuit doesn't directly create a lien; instead, it might lead to a judgment that results in a lien. A lis pendens also doesn't create a lien itself but is a notice of a pending lawsuit which may eventually produce a judgment leading to a lien.