Movement of substances across a plasma membrane that does not require energy. A. active transport
B. passive transport
C. diffusion
D. osmosis

b)Passive transport because the  movement of substances across the membrane without the expenditure of cellular energy.

while active transport is :

active transport is the movement of substances across the membrane using energy from adenosine triphosphate (ATP).

the correct answer is b

the answer is c.mitochondria. glad to .