In which direction did the water move to make the red blood cell shrink Why did water move in that direction?

The water moved out of the red blood cell, causing it to shrink, a process known as crenation. This movement occurred because the surrounding solution was hypertonic, meaning it had a higher concentration of solutes than the inside of the cell. As a result, water diffused out of the cell to balance the solute concentrations, leading to the cell's shrinkage.