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Which one of the following methods uses pressure drop/ lowering of applied pressure to remove the moisture content?

Which one of the following methods uses pressure drop/ lowering of applied pressure to remove the moisture content? Correct Answer Dewatering

The process removing moisture by the application of low pressure is called dewatering. Drying is the process of removing moisture from a wet surface whereas dehydration is the process of complete molecular removal of water or the loss of water as a constituent.

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IV. Lowering depreciation charges
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2. Lowering unit cost
3. Lowering capital cost
4. Lowering depreciation charges