Question

read the text.
molecules tend to move from areas of high concentration (more molecules for the space) to areas of low concentration (fewer molecules for the space) until they are evenly spaced. this movement is called diffusion. if you spray air freshener or perfume in a room, the perfume molecules will tend to move toward areas in which they are less concentrated, which is how the scent spreads.
osmosis is the term for a related but more specific kind of movement, the movement of certain kinds of molecules across semipermeable (semi - open) membranes. many substances cant move across semipermeable cell membranes, but water molecules can. the process of pickling vegetables involves osmosis. salt is more highly concentrated in salt water than it is in vegetables. for this reason, when a vegetable is placed in a jar of salt water, water molecules will pass via osmosis from areas of lower salt concentration (inside of the vegetable cells) to areas of higher salt concentration (the salt water surrounding the vegetables). this leaves the vegetables crispier.
which term matches the picture?
image of three jars with blue liquid, showing different stages of diffusion or osmosis
partial text at bottom: osmosis

Explanation:

Step1: Analyze the text definitions

Diffusion is the movement of molecules from high to low concentration until evenly spaced. Osmosis is movement across semipermeable membranes (specific, like water in pickling).

Step2: Analyze the picture

The three jars show a substance (blue) spreading from a more concentrated area (first jar, more blue clumps) to less concentrated, ending with even distribution (third jar). This matches diffusion's definition (spreading to even concentration, no semipermeable membrane implied here). Osmosis involves membranes, which isn't shown.

Answer:

The term that matches the picture is diffusion.