If the root hydro- means "water", then the word that means "an electrical instrument used to monitor underwater sounds" is called a hydrophone. A hydrophone is a kind of microphone that is specifically used to detect and record sound waves underwater.
Answer:
Money, Cause if you have a money you can buy everything you what.
Explanation:
Well that's my opinion brainliest please .
Answer:
The first answer choice is correct. I hope this helped!