Which process explains what happens to a limp celery when it is put in pure water?

When limp celery is placed in pure water, it undergoes a process called osmosis. Water moves from an area of higher concentration (the pure water) to an area of lower concentration (the cells of the celery, which have a higher solute concentration). This movement of water into the celery cells causes them to swell, restoring the celery's crispness and firmness. As a result, the celery becomes turgid as the cells fill with water.