What is a legal document that states a trust as the owner of a property?

The correct answer is the trust deed, as it specifically serves as the legal instrument by which a trust is established and signifies ownership of the property by the trust. A trust deed outlines the details of the trust arrangement, including the property involved, the trustee's powers, and the beneficiaries' rights. This legal document establishes the trust as a separate legal entity, allowing it to hold title to property.

In contrast, a trust document generally refers to the broader set of documents that may include the trust's foundational agreements but does not typically act as the title-holder for the property itself. A living will pertains to medical directives concerning a person's health care decisions, while an estate plan encompasses a comprehensive strategy for managing an individual’s assets during their lifetime and after death, but it is not solely focused on establishing property ownership by a trust.