I fell like its A but it could also be C try one hope this helps
The answer is Flemin and he discovered it by complete accident and by that very accident he basically saved the world <span />
Answer:
it can clean the water
Explanation:
keeping the water clean improves the quality and is healthier for you
<span>The brain contains a number of hollow structures called Ventricles deep within it. These Ventricles connect to the spinal canal and areas surrounding the brain. The Ventricles are filled with cerebrospinal fluid.</span>