Well fingerprint are more versatile and easy to acquire than any other biometrics. They are accepted in a court of law and no two people (not even identical twins) have the same fingerprints, it is extremely easy for even the most accomplished criminals to leave incriminating fingerprints at the scene of a crime. Fingerprints are one of a kind.
The answer would be B, flapping ability.
Magnifying Glasses, Telescopes and Glasses.
Answer:
The answer is calories.
The average human being needs 2000 calories for them to be energized.
