What type of reference point is classified as intangible?

The correct classification of a reference point as intangible pertains to landmark names. Landmark names are considered intangible because they do not have a physical presence that can be seen or touched. Instead, they represent a concept, idea, or recognition associated with a location. For example, the name "The Statue of Liberty" refers to a specific physical structure, but the name itself does not exist in a tangible form.

In contrast, street signs, government buildings, and GPS coordinates all involve physical entities or systems. Street signs are physical objects that provide directions or information; government buildings are tangible structures; and GPS coordinates denote specific points on the Earth using numeric values, thus providing a concrete means of navigation. Landmark names, however, exist conceptually in people's minds and cultural context rather than as a physical representation, making them an intangible form of reference point.