Which of the following represents a signed agreement of an oral understanding?

The term that best represents a signed agreement of an oral understanding is a funeral service contract. This type of document serves as a formal and binding agreement between the funeral provider and the family, detailing services to be provided, costs, and any specific requests made by the family. While an embalming authorization may involve an agreement concerning specific services related to the preparation of the body, it is typically part of the larger funeral service contract that outlines the general terms and conditions under which the services will be performed.

In contrast, a documented family wish serves to record the preferences of the family but does not constitute a legally binding agreement. Payment confirmation simply confirms the receipt of payment and does not imply an agreement regarding services rendered.