C. Reverse Osmosis
Correct Answer: C. Reverse Osmosis
Detail about MCQs
Reverse osmosis is a process used to desalinate seawater and convert it into freshwater. It involves passing the seawater through a semipermeable membrane under high pressure. The membrane allows the water molecules to pass through while blocking the salts and impurities, resulting in the separation of freshwater from the concentrated saltwater. This process is widely used in desalination plants to produce drinking water from seawater.