What would increase the reaction rate?

Catalyst would increase the reaction rate.

Explanation:

The rate at which the chemical reaction occurs is controlled by a number of factors and catalyst is the most suitable answer because irrespective of the type of reactants involved and the type of reaction, a catalyst always increases the speed of the reaction no mater what as it is independent. Other factors which influences the reaction rate are temperature, increasing the concentration of the reactants, e. t, c.

Enzymes can increase the rate of a reaction by lowering the activation energy needed for the reaction