Biology

The correct answer is: D.Facilitated Diffusion.

Facilitated diffusion is a type of passive transport in which molecules move across the cell membrane from an area of high concentration to an area of low concentration, but they do so with the help of a carrier protein or a channel protein. This process does not require energy (ATP) because it relies on the concentration gradient.

To clarify the other options:

A.Diffusion is the general movement of molecules from an area of high concentration to low concentration, but it can occur...