When Enzymes are proteins that speed up chemical reactions in the body so here it increase the surface area of reactants. hence, option d is correct.
What are enzymes?
It is the substance that is treated as the catalyst in the living organism.
In this, the biological process arises within the living organism are considered to be the chemical reactions.
Also, enzymes should be soluble protein molecules that speed up the chemical reaction in cell.
hence, the option d is correct.
learn more about an enzyme here: https://brainly.com/question/19346597
