OPT: 1). flow of electrons. 2). Dehydration. 3). heat energy. 4). heating liquids. 5). a hydraulic system. 6). water vapor. 7). kinetic energy. 8). Time and energy.
Given those answer options, answer the question: You are presented with the quiz "What can be used to separate a solute from a solvent in a solution?" But you don't know the answer, so you turn to your teacher to ask for hints. He says that "evaporation can be used for separating a solute from a solvent in a solution" and "heating liquids is also made easier by allowing saturated gas to reduce evaporation". So, what's the best answer to the question?
A:
4).