As the temperature of a reaction is increased, the rate of the reaction increases because the . (A) reactant molecules collide more frequently with less energy per collision. (B) reactant molecules collide less frequently. (C) reactant molecules collide with greater energy per collision. (D) reactant molecules collide less frequently and with greater energy per collision. (E) activation energy is lowered.
Temperature is the measure of "hotness" of a system. When temperature increases, the kinetic energy of the particles increase. So they will collide with greater energy per collision.