Biology

The correct answer is A.Cell membrane.

The cell membrane (also known as the plasma membrane) plays a crucial role in maintaining homeostasis within the cell. It controls the movement of substances in and out of the cell, ensuring that the internal environment remains stable by regulating the intake of nutrients, the removal of wastes, and the balance of ions and water. This selective permeability is essential for keeping the conditions inside the cell optimal for its function.

B.Mitochondrion: The mitochondrion is primarily responsible for energy production in the cell through cellular respiration, ...