Answer:
The final sentence, It shows that Mateo needs to pump bubbles into the tank, and bubbles are just a gas trapped in a liquid, in this case, air in water. It shows that Mateo's fish needs the bubbles, which means it needs air.
Explanation:
There is no picture or options to pick from.
A vast network of nerves sends electrical signals to and from other cells, glands, and muscles all over your body. These nerves receive information from the world around you. Then the nerves interpret the information and control your response.