I don't see the scale or parallelogram sorry I can't help you.
Answer:
They are organisms (individual organisms called "plankters") that live in large bodies of water.
Explanation:
They reside in large bodies of water (oceans, lakes, etc). They are usually abundant in surface waters because all ecosystems of plankton live off input of solar energy.
I will think it’s B.... hope it helps!
The answer is dams they protect against flooding