A dilute solution has a concentration of
molecules
O A. high, water
B. high, dissolved
C. low, water
D. equal, water and ion

It's Letter A.

know why? it because molecules has a Higher concentration of water molecules.

Dilute solutions have a high concentration of water molecules.

i think its c. amphipod

the solute can move "downhill," from regions of higher to lower concentration, relying on the specificity of the protein carrier to pass through the membrane. this process is called passive transport or facilitated diffusion, and does not require energy.