Biology

The correct answer is: D.the concentration of the substance is greater outside the cell than inside.

Diffusion is the process by which substances move from an area of higher concentration to an area of lower concentration. For a substance to diffuse into a cell, its concentration must be higher outside the cell than inside.

The other options are not directly related to diffusion in the same way:

A.Large organic food molecules like proteins or starches are typically too large to diffuse across the cell membrane easily. They ...