Regarding a freshwater generator of the reverse-osmosis type, what statement is true?

Correct Answer: Option A — The solute is salt and the solvent is fresh water.

In reverse osmosis, the solute is the dissolved substance, which is salt, and the solvent is the liquid medium, which is fresh water. The process uses a semi-permeable membrane to separate these components by forcing the solvent through the membrane while rejecting the solute under high pressure.