Answer:
Option B, to act as a catalyst in chemical reactions
Step-by-step explanation:
Enzymes are organic bio molecules that act as catalyst to increases the rate of a bio-chemical reaction involved in any biological process. All enzymes are made of amino acids and have suffix -ase at the end of their name.
For example -
Enzyme Amylase catalyses the chemical processes involved in the digestion of sugar in mouth. It increases the rate of conversion of starch molecules into smaller glucose and maltose molecules.
Thus, option B is correct