The layers of vegetable wastes and night soil alternatively piled above the ground to form a mound, is called A. A heap B. Plateau C. Windrow D. None of these

The correct answer is C. Windrow.

A windrow is a long, narrow pile of organic matter that is turned regularly to promote aeration and decomposition. Windrows are typically used to compost agricultural waste, such as manure, crop residues, and food waste.

A heap is a pile of material that is not turned regularly. Heaps are often used to store materials, such as firewood or coal.

A plateau is a flat area of high ground. Plateaus are typically formed by the erosion of surrounding land.

None of these is the correct answer.