Biology

The correct answer is: D.Stabilizes the fluidity of the cell membrane.

Cholesterol plays an essential role in maintaining the fluidity and stability of the cell membrane. It is embedded within the phospholipid bilayer and helps to:

1.Prevent the membrane from becoming too rigid at lower temperatures by preventing phospholipids from packing too closely together.

2.Prevent the membrane from becoming too fluid at higher temperatures by restricting excessive movement of the phospholipids.