Susie has a potted plant. She sets up an experiment that shows that water travels through a plant into the air. Which experiment would show this?

a) put water in a container under the pot; water will disappear from the container.
b) cover one of the stems of the plant with a plastic bag and water the plant; drops of water will be seen in the bag.
c) place a cut stem from the plant in a glass of coloured water; the plants leaves will change colour.
d) place a cut stem from the plant in a plastic bag; water will be seen in the bag.