Susan has been assigned to build a model of a plant cell. She has many materials to help her build her model: plastic wrap, a plastic sandwich bag, aluminum foil, different kinds of dry pasta, stiff cardboard, and pipe cleaners.
She selects the stiff cardboard to represent which outside supporting part of the plant cell?
O A. cell membrane
O B. mitochondria
O c. cell wall
D. nucleus
E. vacuole

HELP!