A student cut a 2cm${}^3$ block out of a potato and weighed the block. She then placed the block in distilled water and waited for an hour. Which of the following conditions will occur when she reweighs the block?

Potato cell interior is hypertonic than distilled water. The cell membrane of potato cells works as semipermeable membrane and water enter into the cell down the concentration gradient by the process of osmosis. Endosmotic movement of water inside the potato cells caused an increase in its mass. Thus, the correct answer is option B.