The process of diffusion requires ..

A) a cell membrane
B) an aqueous solution
C) difference in the concentration gradient
D) a, b, & c

D) a, b, & c

The process of diffusion requires all of the options mentioned. Therefore, the correct answer is D) a, b, & c.

Diffusion is the movement of molecules from an area of higher concentration to an area of lower concentration. In order for diffusion to occur, several conditions must be met.

Firstly, a cell membrane is necessary for diffusion. The cell membrane acts as a barrier that separates the internal environment of the cell from the external environment. It allows certain substances to pass through, including those involved in diffusion.

Secondly, an aqueous solution is required for diffusion. Most biological systems, including cells, operate in water-based environments. The molecules involved in diffusion need to be dissolved in water to move from one location to another.

Lastly, there must be a difference in the concentration gradient for diffusion to occur. This means that there needs to be a higher concentration of the molecules in one area compared to another. This concentration gradient is the driving force behind diffusion, as molecules naturally move from areas of high concentration to areas of low concentration in order to reach equilibrium.

Therefore, the process of diffusion requires a cell membrane (option A), an aqueous solution (option B), and a difference in the concentration gradient (option C), making option D the correct answer.

Im pretty sure its D because I think both A and C are needed and B sounds logical.