A biologist is examining several leaves of a plant. She covers the top of one leaf with petroleum jelly. She covers the bottom of a different leaf with petroleum
jelly. She leaves a third leaf alone. After several days the leaf that had petroleum
jelly on the bottom side of the leaf has shrunk. The scientist states that leaves
must take in water through holes on the underside of the leaf. What type of
statenfent does this represent?
observation
inference
prediction
O hypothesis