Protein function is lost or reduced when a protein is denatured. Which of the environmental factors listed can cause protein denaturation? excessive heat extreme pH exposure to water protein‑digesting enzymes

Option A,  Excessive heat

Explanation:

A denatured protein is the one whose structure changes with the loss of an activity. Generally, a denatured protein unfolds itself when the 2 D network of water around the protein molecule breaks by the breaking of hydrogen bonds. This primarily happens when the temperature is high. Both hydrogen bonds and hydrophobic interactions are disturbed by the heat thereby breaking hydrogen bonds.

the answer is b.) hydrogen bonds between bases.