For this question, the 2 actions that increase the rate of solute dissolving in a solvent are:
Crushing a solute: For example, if you put granulated sugar in a glass of iced tea, it will dissolve more quickly than the same amount of sugar in a cube. Then we have more surface area exposed.
Rising the temperature: If we increase the temperature of the solvent, we will have more kinetic energy. The increased rapid motion means that the solvent molecules collide with the solute with greater frequency and that the collisions occur with more force.
Answer: b. Crushing the solute and raising the temperature