What type of easement is created by an authority without the need for a dominant tenement?

The correct answer is statutory easement. Statutory easements are established by law and do not require a dominant tenement, meaning there isn't a specific property that benefits from the easement. Instead, these easements are typically created for public use or benefit, often by government authorities. Common examples include easements for utilities, roads, or drainage that are established to serve the public interest.

This type of easement is important because it reflects the broader needs of society and allows authorities to execute certain functions or maintain infrastructure without the necessity for a direct benefit to a private property. In contrast, common law, traditional, and private easements typically require a dominant tenement that benefits from the easement, linking the rights and responsibilities to specific properties rather than broad public interests.