Which of the following natural processes is most likely to support the formation of an underwater sinkhole?

Pollution buildup from deposited minerals

Limestone cave collapsing due to changes in sea level

Erosion of large amounts of sand moved by ocean waves

Oxidation of rock formed by chemical weathering

Limestone cave collapsing due to changes in sea level.

Explanation:

Sinkholes are common where the rock below the land surface is limestone or other carbonate rock, salt beds, or in other soluble rocks, such as gypsum, that can be dissolved naturally by circulating ground water. Sinkholes also occur in sandstone and quartzite terrains.