The correct answer is that water will flow out of the cells of the body.
When one consumes salt water, the concentration of solutes external to the cells will enhance making the water inside the cell to move out of the cells, thus, making the cells shrink. Outside the cell, the solution is hypertonic and may result in dehydration.
The kidneys in human can only produce urine, which is less salty in comparison to salt water. Thus, to withdraw all the extra salt consumed, one has to urinate more water than one has drunk. Hence, resulting in dehydration.
