Which of the following is an example of how to supply activation energy to begin a reaction?
a. cool the reaction flask in an ice bath.
b. add a catalyst.
c. heat the reaction flask on a hot plate.
d. add an inhibitor. '

The event that is an example of how to supply activation energy to begin a reaction is adding a catalyst. The answer is letter B. Cooling the reaction flask in an ice bath, heating the reaction flask on a hot plate. And adding an inhibitor does not answer the question.

first one is the correct answer