Which of the following can be produced by dolphins, porpoises, bats and rats?

Correct option is B

The correct answer is (b) Ultrasound.
· Ultrasound refers to sound waves with frequencies higher than the upper audible limit of human hearing (above 20,000 Hz).
· Dolphins, porpoises, bats, and some species of rats produce ultrasound for communication, navigation, and hunting.
· For example, bats use echolocation, which involves emitting ultrasonic sound waves to locate objects and prey in their environment.
Information Booster:
· Music: While some animals can produce sounds, they do not intentionally create music in the way humans do.
· Note: Refers to a musical tone, which is not specific to ultrasonic sound waves.
· Infrasound: Sound waves with frequencies below the audible range of human hearing (below 20 Hz), often produced by large animals like elephants, not dolphins, bats, or rats.