What types of land can be defined by the term landlocked?

The term "landlocked" specifically refers to a piece of land that is enclosed by other properties and lacks direct access to a public roadway or body of water. Therefore, the characteristic that best fits this definition is that it has no public access. This lack of access can significantly impact various aspects of land use, property value, and development potential, as it means that the land is isolated and cannot be reached without traversing another property or relying on private roads, which may not be practical for everyday use or for transporting goods.

In contrast, the other choices do not accurately capture the essence of what it means to be landlocked. For instance, a piece of land being accessible via road suggests it has some form of connection to public transport systems, contradicting the definition. Additionally, being designated solely for agricultural use does not inherently relate to the access status of a property; agricultural lands can be landlocked or not. Lastly, the designation of land as open to public utilities implies accessibility and services are available, which further counters the definition of being landlocked. Thus, the correct understanding hinges on the absence of public access, clearly defining why this option stands out.