After the active transport of chloride ions out of the cell by CFTR,why does water follow by osmosis?

Question

Quizplus · Accepted Answer

The active transport of chloride ions out of the cell increases the solute concentration outside the cell, making the external environment hypertonic relative to the inside of the cell. Water moves by osmosis from areas of lower solute concentration to areas of higher solute concentration to balance the solute concentrations, hence water follows the chloride ions out of the cell.

After the Active Transport of Chloride Ions Out of the Cell