Bats can fly in dark because they
- have strong wings
- have sharp eyes
- produce ultrasonic waves
- are nocturnal
Bat echolocation is very much similar to a SONAR and is a perceptual system where ultrasonic sounds are emitted specifically to produce echoes.
By comparing the outgoing pulse with the returning echoes, the brain and auditory nervous system can produce detailed images of the bat’s surroundings. This allows bats to detect, localize and even classify their prey in complete darkness.
The correct option is C.