In a hypotonic solution, the cell has more solute than its environment, which means the concentration of solutes is lower outside the cell compared to the inside. This causes water to move into the cell from the surrounding environment in order to balance the solute concentrations. As a result, the cell swells and may eventually burst if too much water enters.
Therefore, the correct response is:
The cell has more solute than its environment, so solvent moves from outside the cell to inside the cell, causing the cell to swell.