Cells in the body exist in an aqueous environment. They are
constantly surrounded by water or a solution that contains water.
Why don't cells dissolve when they get wet?
O A. The cell membranes are composed of proteins that
do not mix with water.
B. The cell membranes are made of lipids that do not
mix with water.
O C. The cell membranes repel water due to specialized
pumps on their surfaces.
D. The cell membranes absorb all the water before it
can degrade the cell.

The cell membranes are made of lipids that do not  mix with water.

Explanation:

Cells in the body are made up of a plasma membrane which is made up of phospholipids that have hydrophilic heads that dissolve in water and hydrophobic tails that do not dissolve in water. The membrane is a bilayer wherein the hydrophilic heads faces the aqueous environment both inside and outside the cells while the hydrophobic tails faces each other and cluster up preventing solubility in water.  

The attraction of the hydrophilic heads to the water inside and outside of the cell and clustering of the hydrophobic tails together and avoiding mixing with water keeps the cell membrane in place.

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ya the other dude is right