Answer:
[tex]\boxed {\tt D. \ Enzyme \ denatures}[/tex]
Explanation:
Extreme temperatures or pH can denature enzymes.
Enzymes have a very special and specific shape that determines which substrate they can act on. If the pH changes too dramatically, then the peptide bonds holding the amino acids of the enzyme together break.
When the bonds break, the enzyme loses its shape and it cannot function anymore.
So, there is a change, the reaction doesn't happen faster or die. We can eliminate choices A, B, and C. The correct choice is D. enzyme denatures
