Mark places some cells from an onion skin on a microscope slide. He uses a freshwater solution to make the wet-mount slide. When he observes the cells under the microscope for an extended period of time, what is he most likely to see?
A) The cells have dissolved, destroying the cell walls
B) The cells have shrunk within the cell walls
C) The cells have not been affected by the solution
D)The cells have swollen, expanding the cell walls