Question

what is a sinkhole?

a. a large overflow of water from a river
b. a rapid slide of mud down a hill
c. a mass of snow racing down a mountain
d. a low area or hole in the ground

Explanation:

A sinkhole is a depression or hole in the ground caused by the collapse of a surface layer. Options A, B, and C describe different natural - hazard phenomena not related to sinkholes. Option D correctly defines a sinkhole as a low area or hole in the ground.

Answer:

D. A low area or hole in the ground