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Correct Answer: Option D — **Surya Kiran**. **Surya Kiran** is the accurate answer because Surya Kiran is a recurring joint training exercise between the armies of India and Nepal. This identifying fact establishes its correct connection with army exercise and distinguishes it from the other defence-related choices. Why the other options are incorrect: Option A — **Khadakwasla, Pune**: This is actually associated with training institution; specifically, the tri-service academy trains cadets of the Army, Navy and Air Force before service-specific training. Option B — **Main battle tank**: This is actually associated with armoured platform; specifically, Arjun was developed as an indigenous main battle tank for armoured warfare. Option C — **Maritime patrol and reconnaissance aircraft**: This is actually associated with naval aircraft; specifically, the P-8I performs long-range maritime surveillance, reconnaissance and anti-submarine missions. Exam Takeaway: Link **Surya Kiran** with its exact **army exercise** association for fast **Indian Defence GK** revision.
