Why Is PH Stability Important for Homeostasis

Why is pH stability important for homeostasis?

A) There is no mechanism for buffering pH changes in blood.
B) Excess H⁺ disrupts hydrogen bonds, thereby destroying the cohesion between water molecules.
C) Buffers can only work properly within a narrow pH range.
D) Most biological molecules function optimally only within a narrow pH range.
E) Excess H⁺ facilitates hydrogen bonds, which disrupt the structural integrity of biological molecules.