There is a higher sodium concentration on the inside of the cell than there is on the outside of the cell. How will the sodium particles move and by what process? Sodium will move from the outside of the cell to the inside of the cell by osmosis.

Sodium will move from the inside of the cell to the outside of the cell by osmosis.

Sodium will move from the outside of the cell to the inside of the cell by diffusion.

Sodium will move from the inside of the cell to the outside of the cell by diffusion.