Moths being attracted to a flame cannot be used as an analogy for diffusion.
It is the movement of molecules from the region of higher concentration of the molecule to the region of lower concentration of the same molecule.
A drop of food coloring added to water will diffuse out until the entire water is covered by the coloring.
Students leaving school at the end of the day can be likened to diffusion because they move from regions of concentration to regions of lower concentration.
The spreading of exhaust gases is a diffusion.
More on diffusion can be found here: https://brainly.com/question/24746577