Answer:
The correct option is D. two layers of phospholipids, with their polar hydrophilic heads facing away from each other
Explanation:
The cell membrane is made up of two layers of phospholipids. The structure of phospholipids comprises of a hydrophobic tail which is made up of fatty acids and a hydrophilic head that is made up of phosphate. The structure of a cell membrane contains two fatty acid tails.
As the tail is hydrophobic, hence it is shielded and located inwards. The hydrophilic heads are located outwards in opposite directions.
