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 the context of reverse osmosis, the solute is the dissolved substance, which is salt, while the solvent is the medium in which it is dissolved, which is fresh water. The process uses high pressure to force the solvent through a semi-permeable membrane, leaving the solute behind.