Which of the following is the best definition of osmosis? A.
Transport of molecules across the cell membrane that requires the use of energy in the form of ATP

B.
The movement of molecules across the cell membrane from areas of low concentration to areas of high concentration

C.
The movement of water across the cell membrane from areas of high concentration to areas of low concentration

D.
Transport of substances that requires the cell membrane to pinch around the substance, forming a vesicle