The correct answer is: B. Diffusion
Diffusion is the movement of molecules from an area of high concentration to an area of low concentration. It is a passive process, meaning that it does not require energy from the cell. Diffusion is a very important process in cells, as it allows for the movement of nutrients and waste products.
Osmosis is the movement of water across a semipermeable membrane. It is also a passive process, but it requires a difference in water concentration across the membrane. Osmosis is important for cells, as it allows them to maintain their water balance.
Both diffusion and osmosis are important processes in cells, but they are not the same process. Diffusion is the movement of molecules, while osmosis is the movement of water. Diffusion does not require a difference in concentration, while osmosis does.
The answer to the question “Which process requires no energy from the cell?” is diffusion.