Answer:
The correct option is A) controls the movement of substances into and out of cells
Step-by-step explanation:
As the description tells that the structure is a phospholipid bilayer, one can easily predict that the structure is a plasma membrane. A plasma membrane consists of lipid tail and phosphorus heads. As lipids are hydrophobic they are embedded inwards between the phosphate heads. The plasma membrane also consists of proteins and carbohydrates embedded in its structure. The proteins also facilitate the movement of molecules inside the cell.
The function of the plasma membrane is to allow and control the movement of molecules inside and outside of a cell.