Answer
C)
Explanation
The collision theory of kinetics states that "when suitable particles of the reactant hit each other with correct orientation, only a certain amount of collisions result in a perceptible or notable change; these successful changes are called successful collisions", meaning collisions are needed for a reaction to occur, this means the rate of reaction is proportional to the number of molecular collisions per second. If one concentration is doubled, the number of collisions will also double.
