Biology

The correct answer is: C.To regulate the cell cycle and ensure proper cell division.

Explanation:

Cells communicate to ensure coordinated functions, such as regulating the cell cycle and maintaining proper division. Signaling pathways help control when and how cells divide, which is essential for growth, development, and tissue repair. Errors in this communication can lead to issues like cancer or developmental disorders.

Explanation of other options:

A.To increase their size: While signaling can affect growth, increasing cell size is no...