Catalysts affect the chemical reactions that take place within the body. What function do catalysts perform in chemical reactions?

ACatalysts slow down the rate of chemical reactions.
BCatalysts are always formed by chemical reactions.
CCatalysts are used up during a chemical reaction.
DCatalysts lower the activation energy of a chemical reaction

Verified Answer :

I think the best answer for this is D.  Catalysts lower the activation energy of a chemical reaction. Catalyst is a substance that speeds a chemical reaction. It is not consumed as the reaction proceeds. A catalyst offers a new route for faster reaction.

Answer:

Catalysts typically speed up a reaction by reducing the activation energy or changing the reaction mechanism. Enzymes are proteins that act as catalysts in biochemical reactions. Common types of catalysts include enzymes, acid-base catalysts, and heterogeneous (or surface) catalysts