Answer
A reaction generally can be made to go more quickly by:
B. Adding a catalyst
C. Lowering the activation energy
D. Shaking the reactants
Step-by-step explanation
The presence of a catalyst increases the rate of a reaction by lowering its activation energy. Chemical reactions occur when molecules collide with each other and undergo a chemical transformation.
Stirring and shaking provide some kinetic energy to the system. It increases slightly its temperature and the reaction rate. increasing the kinetic energy of reactant particles also means more of the reactant particles will have the minimum amount of energy required to form products (ie, activation energy) which leads to more successful collisions and therefore increases the reaction rate.