Concept:
• Police organizations in India are divided into armed forces (combatants) and unarmed organizations (investigative, research, or training).
• Armed forces are primarily responsible for security and maintaining order using weapons when necessary.
Step 1: Analyze CISF
The Central Industrial Security Force (CISF) is one of the Central Armed Police Forces (CAPFs).
It is a paramilitary force provided with arms to protect vital installations like airports and power plants.
Therefore, it is an armed organization.
Step 2: Analyze BPR&D
The Bureau of Police Research and Development (BPR&D) is a research organization.
It focuses on the modernization of police forces and research into criminology.
It is an unarmed organization.
Step 3: Analyze CBI
The Central Bureau of Investigation (CBI) is the premier investigating agency of India.
While its officers may carry personal sidearms for protection, its primary function is investigative, and it is classified as an unarmed police agency.
Step 4: Analyze NPA
The Sardar Vallabhbhai Patel National Police Academy (SVPNPA) is a training institution for IPS officers.
It is an academic/training-focused unarmed organization.
Step 5: Conclusion
As the question asks for the organization that is NOT unarmed, CISF is the correct answer.