Respuesta :
The correct option is A. The underground movement of water creates caverns. A cave, sometimes known as a cavern, is a massive natural aperture in the earth that can be explored by people.
How is Cavern formed?
The breakdown of limestone results in the formation of caves. Rainwater absorbs carbon dioxide from the atmosphere, which weakens into acid when it percolates into the soil. As a result, certain of the cracks, bedding planes, and joints in the limestone steadily enlarge to the point where they form caves.
Such a hollow can develop in a variety of rocks and by a variety of mechanisms. The biggest and most frequent caves are created by a chemical interaction between running groundwater and limestone or dolomite bedrock.
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