Biology

The correct answer is: D.Homeostasis

Explanation:

Homeostasis is the process by which organisms maintain a constant internal state (such as temperature, pH, and ion balance) despite changes in the external environment. This is crucial for the survival and proper functioning of cells and organisms.

The other options are unrelated to maintaining a constant internal state:

A.Active Transport: This refers to the movement of substances across a cell membrane against their concentration gradient, requiring energy. It is a mechanism that supports...