What is the use of physical characteristics ‚Äö√Ñ√Æ such as your fingerprint, the blood vessels in the retina of your eye, the sound of your voice, or perhaps even your breath ‚Äö√Ñ√Æ to provide identification?$

What is the use of physical characteristics ‚Äö√Ñ√Æ such as

1.	What is the use of physical characteristics ‚Äö√Ñ√Æ such as your fingerprint, the blood vessels in the retina of your eye, the sound of your voice, or perhaps even your breath ‚Äö√Ñ√Æ to provide identification?$
A.	Backup
B.	Anti‚Äö√Ñ√™virus
C.	Firewall
D.	Biometrics
Answer» E.