<span>The raw materials of photosynthesis, water and carbon dioxide, enter the cells of the leaf, and the products of photosynthesis, sugar and oxygen, leave the leaf. Water enters the root and is transported up to the leaves through specialized plant cells known as xylem vessels.</span>
I think the answer is D.) thermometer and graduated cylinder.
My reason for choosing that answer is because none of the other tools would help to measure the speed of water evaporating in different tempts.