Concept:Biometric data refers to unique physical or behavioural characteristics that can be used to identify a person automatically.Explanation:Fingerprints, the pattern of the eye iris, and the sound of the voice are all distinctive physical or behavioural traits of an individual.Such traits are difficult to forge and are therefore used for biometric identification.A password is not a physical or behavioural feature; it is secret knowledge that a person remembers.Since a password is not part of the human body or natural behaviour, it does not qualify as biometric data.Answer:B. password