Correct option is C
When an individual applies for an AADHAR card, biometric devices are used to collect and store the person's unique biometric data. This information helps in the unique identification of individuals, preventing duplication and ensuring access to services linked with the AADHAR number.
During identity verification (e.g., accessing government services or banking), the individual’s biometric data (fingerprints or iris scan) is compared with the data stored in the AADHAR database using these devices to authenticate their identity.
