Which of the following refers to a legal claim against property due to unpaid obligations?

The term that refers to a legal claim against property due to unpaid obligations is known as a mechanic's lien. This type of lien is specifically used to secure payment for services rendered or materials supplied in the improvement of real property. When a contractor, subcontractor, or material supplier is not paid for their work, they can file a mechanic's lien against the property in question. This claim allows the lienholder to potentially foreclose on the property to satisfy the debt, ensuring that those who contribute to the construction or renovation of a property have a way to secure their payment.

Other types of liens, such as judgment liens, mortgage liens, and attachment liens, serve different purposes. Judgment liens are typically related to court judgments for debts owed, while mortgage liens secure loans taken out to purchase property. Attachment liens can be placed on property as a result of a legal action to ensure that a judgment can be satisfied. However, none of these specifically address unpaid obligations related directly to construction work or material provision as effectively as a mechanic's lien does.