Which type of rights allows a property owner on a waterfront to access and use that water?

The correct choice is water rights, as this term specifically refers to the legal entitlements that property owners adjacent to bodies of water have concerning the use of that water. Water rights generally encompass the ability to access, utilize, and manage the water resources that are adjacent to their property. This includes rivers, lakes, and oceans, allowing the owner to engage in activities such as swimming, fishing, or boating, depending on local regulations and the nature of the water body.

The other terms listed do not capture the full legal nuance that water rights imply. Coastal rights may suggest some aspects related to land near the shore, but it does not clearly define access to the water itself as a property right. Access rights could imply permission to enter a specific area but lack the broad legal context tied to water usage. Usage rights could generally pertain to many kinds of resources but are not specifically defined as they relate to water in the context of property law. Thus, water rights is the most precise and relevant term regarding property owners' access and usage of waterfront resources.