Here’s a clear paragraph you can use:

Salt is extracted mainly from seawater and underground deposits. The most common method is evaporation. In this process, seawater is collected in shallow ponds called salt pans. The heat of the sun and wind causes the water to evaporate slowly, leaving behind salt crystals. As evaporation continues, more crystals form and gather at the bottom. These crystals are then harvested by workers, cleaned to remove impurities, and dried. Finally, the salt is packed for use. Besides evaporation, salt can also be obtained by mining rock salt or by solution mining, where water is used to dissolve underground salt and then evaporated to obtain pure salt.