Which of the following must the GPL include according to regulations?

The correct choice emphasizes the necessity for a detailed description of services within the General Price List (GPL) according to regulations. The GPL is designed to be a transparent document in the funeral industry, outlining the specific services offered by a funeral home and their associated prices. This requirement is crucial, as it ensures that consumers can make informed decisions based on the options available to them and the costs involved.

Providing clear descriptions of services allows consumers to understand what is included in each service package, facilitating comparison among providers and helping them select the offerings that best meet their needs. This transparency is a fundamental principle that aims to protect the rights of consumers in an often sensitive industry.

In contrast, other options such as regulatory changes, the funeral home's location, or competitor lists do not serve this purpose of consumer clarity and informed decision-making in the same way, thus they are not required components of the GPL.