Answer:
goes down regardless of whether the reaction is exothermic or endothermic
Explanation:
The activation energy is the minimum energy the reactants in a chemical reaction will have to reach in order to be transformed into products.
Hence, the higher the activation energy of a reaction, the lower the reaction rate and the lower the activation energy of a reaction, the higher the reaction rate.
Activation energy is independent of whether a reaction is exothermic or endothermic.
<em>Therefore, as activation energy increases, reaction rate goes down irrespective of whether is is exothermic or otherwise.</em>