Question

What technological advancement was used during World War II as a means of locating things acoustically, based on sounds in the water?
A. Semaphore
B. Sonar
C. Bass ​

Answer 1

Answer:

a

Explanation:

Answer 2

Answer is B 100%. Sonar uses sound waves o locate object. It’s definitely not Semaphore. That’s a system of flags for communication.