Question

1. what term refers to a region where sinkholes and caves are close together?- cave system- calcite topography- karst topography- sunken cave

Explanation:

Karst topography is a landscape formed by the dissolution of soluble rocks (like limestone), characterized by closely occurring sinkholes, caves, and underground drainage systems. The other options are incorrect: a cave system refers to interconnected caves, calcite topography is not a standard term for this feature, and a sunken cave is a single cave formation, not a region of such features.

Answer:

Karst topography