Question

a passive process, ______ is the movement of solute molecules from an area of greater concentration to an area of lesser concentration.

○ osmosis

○ diffusion

Explanation:

To solve this, we analyze the definitions:

• Osmosis is the movement of solvent (usually water) across a semipermeable membrane from low to high solute concentration (or high to low solvent concentration).
• Diffusion is the passive movement of solute molecules (or particles) from an area of higher concentration to an area of lower concentration. The question describes the movement of solute molecules from greater to lesser concentration, so diffusion matches.

Answer:

B. diffusion (assuming the second option is labeled B; if the first is A and second B, then the correct one is the option with "diffusion")