I would go with b? That just in my opinion tho
Answer:
W- developed seeds
X-angiosperm
Explanation:
Well for one, these two are the only things w/ a referrable image (I'm not sure if that's a word :-)) Another thing is angiosperm literally means flowering plant and a tomato is a ripe, or flowering, plant. W is an image of seeds that are at mid stage in there developing process, so it is clearly the answer. Correct me if im wrong :-D.
B. law of conservation of mass
This is why the total amount of and element before and after a chemical reaction is constant.
Angelman syndrome to be sure