Respuesta :
Answer : Option A) Particles need to collide in order to react.
Explanation : According to the collision theory, for a reaction to occur, there must be a collision taking place between the two reactant particles in the system. This confirms the option A as the correct answer.
Answer:
A.Particles need to collide in order to react.
Explanation:
Particles need to collide in order to react applies to the collision theory.