what is true about the structure or function of the plasma membrane?
a) large molecules often cross the plasma membrane while inside vesicles
b) Hydrophobic molecules keep the cell from getting too much water
c) The bilayer structure forms a solid boundary that separates the cell from its environment.
d) it is made entirely of integral proteins

PLEASE HELP WELL MAKE BRAINLEST I RLLY NEED HELP IM DOING THE TEST RIGHT NOW!!!