Biology

The correct function of the cell membrane is: B.To control what enters and leaves the cell.

The cell membrane is a selectively permeable barrier that regulates the movement of substances into and out of the cell, maintaining the internal environment and allowing the cell to interact with its surroundings. This function is crucial for maintaining homeostasis and supporting cellular processes.

Explanation of other options:

A.To protect and support the cell: While the cell membrane does provide some protection, the cell wall (in plant cells, bacteria, fungi, and some other organisms) is the main structure responsible for providing protection and support.