What process of desalination uses high pressure and selectively permeable membranes to remove salt from seawater?

Reverse osmosis is the process of desalination that uses high pressure and selectively permeable membranes to remove salt from seawater. The correct answer between all the choices given is the first choice or letter A.

To add, reverse osmosis (RO) is a water purification technology that uses a semipermeable membrane to remove ions, molecules, and larger particles from drinking water.

sheep is a herbivore animal whereas grasshopper belongs to the class chordates but both of them feed on greens.  

if grasshopper and sheep feeding on a pasture land, i do not think both of them will have any impact on each other. however, the number of the species can make difference. since sheep feed on greens, there is a possibility there left no pasture land for the grasshoppers or they may get extinct.