Biology

The correct answer is: D.Controls what enters and exits the cell.

The cell membrane (also known as the plasma membrane) plays a crucial role in regulating the movement of substances into and out of the cell. It is selectively permeable, meaning it controls the passage of ions, nutrients, waste products, and other molecules, while allowing the cell to maintain homeostasis.

Here's why the other options are not correct:

A."Protects and provides structure to the cell": While the cell membrane does provide a boundary and some structural support, this is more directly ...