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Correct Answer: Option B — **Ballistic missile family**. **Ballistic missile family** is the accurate answer because Agni denotes a family of Indian surface-launched ballistic missiles with different ranges. This identifying fact establishes its correct connection with strategic missile and distinguishes it from the other defence-related choices. Why the other options are incorrect: Option A — **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. Option C — **Varuna**: This is actually associated with naval exercise; specifically, Varuna is the established bilateral maritime exercise of the Indian and French navies. Option D — **General Bipin Rawat**: This is actually associated with historic appointment; specifically, he assumed office as the first Chief of Defence Staff on 1 January 2020. Exam Takeaway: Link **Ballistic missile family** with its exact **strategic missile** association for fast **Indian Defence GK** revision.
