Which molecules do cells need to get from outside the body in order to function properly? Please explain why

Water, carbon dioxide, and oxygen are among the few simple molecules that can cross the cell membrane by diffusion (or a type of diffusion known as osmosis ). Diffusion is one principle method of movement of substances within cells, as well as the method for essential small molecules to cross the cell membrane.

Ibelieve the answer is c) our brain jumps to conclusions based on past experience