During activation energy...

Question

A. A catalyst lowers the activation energy by changing the reaction mechanism.
B. A catalyst does not change the activation energy.
C. A catalyst lowers the activation energy by changing the rate.
D. A catalyst raises the activation energy by changing the reaction mechanism.
E. A catalyst raises the activation energy by changing the rate.

Look up activation energy and catalysis, especially, how the activation energy is lowered.

Answer 1

I think answer is A. A catalyst lowers the activation energy by changing the reaction mechanism.