The condition is that the concentration of salt inside the cell is greater than outside the cell.
Option A is correct
This is because water molecules will always move from an area of high water potential to an area of low water potential. Water potential is a measure of how likely water molecules are to move. It is affected by the concentration of dissolved substances in a solution.
We see in the diagram that the concentration of salt inside the cell is greater than outside the cell. This means that the water potential inside the cell is lower than the water potential outside the cell. As a result, water molecules will flow into the cell by osmosis.