The blue substance, dmso molecules, is a muscle relaxer used by athletes to soothe cramps. unlike most substances, it can pass directly through cell membranes. dmso moves into cells by the process of
a) osmosis.
b) diffusion.
c) phagocytosis.
d) active transport.

Well A osmosis is the movement of water so it isn't that answer
B diffusion may be the DMSO can diffuse into the cells directly
C phagocytosis only applies to phagocytes destroying pathogens
D active transport for this the cells have to use ATP to bring the DMSO across a concentration gradient

So I think the answer is B the DMSO moves from the blue substance into the cells directly.

hope that helps