A. Automated Permanent Account Academic Registry
B. Aadhar Permanent Academic Account Registry
C. Aadhar Payment Automatic Account Registry
D. Automated Permanent Academic Account Registry

Solution

D. Automated Permanent Academic Account Registry

Explanation

APAAR stands for Automated Permanent Academic Account Registry. It is a unique identification system for students in India that was introduced as part of the "One Nation, One Student ID" program. The APAAR ID card is issued by the Academic Bank of Credits (ABC Bank).