Question

what is the outermost layer of a cell that allows movement of material in/out of the cell? membrane ultima cell membrane cell shield cell barrier rewatch

Explanation:

The cell membrane is the outermost layer of a cell that controls the movement of substances in and out of the cell through processes like diffusion, osmosis, and active transport. There is no such thing as "membrane ultima", "cell shield" or "cell barrier" in cell - biology terms for this function.

Answer:

B. cell membrane