Which reason best explains why the cell membrane the cell maintain homeostasis

The correct answer is:

A. The cell membrane is selectively permeable.

Explanation:

A selectively permeable cell membrane is a cell membrane that concedes certain molecules, and/or ions to pass inside it by means of active or inactive transport.  Cell membrane assumes a vital part in saving up the homeostasis by regulating the substances that infiltrate the phone, either opening the phone or leaving the phone.

an active site is a region that is present on an enzyme where the reactants or the substrate molecules we can say bind and experience a chemical reaction. the substrate is basically a reactant whose concentration is changing and that is converting into a product after binding at the active site of an enzyme