Answer:
The movement of specific substances into and out of the cell is
controlled by the cell membrane. Option B is correct
Step-by-step explanation:
The cell membrane is an integral part of cells that separates the inside of the cell from the outside environment. It plays a significant role in controlling specific substances entering and exiting the cell. This selective permeability is due to the structure and composition of the cell membrane. It is composed of a lipid bilayer, which creates a barrier that allows only specific substances to pass through.