Which bilateral army exercise is conducted by India and the United States?

Correct Answer: Option A — **Yudh Abhyas**. **Yudh Abhyas** is the accurate answer because Yudh Abhyas is a recurring bilateral training exercise between the Indian Army and the United States Army. 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 B — **15 January**: This is actually associated with commemorative day; specifically, the day commemorates Lieutenant General K. Cariappa taking over as the first Indian Commander-in-Chief of the Indian Army in 1949. Option C — **Bengaluru**: This is actually associated with defence public-sector enterprise; specifically, HAL’s major aerospace design, manufacturing and corporate functions are associated with Bengaluru. Option D — **Aircraft carrier**: This is actually associated with naval aviation platform; specifically, the ship operates fixed-wing aircraft and helicopters as an Indian Navy aircraft carrier. Exam Takeaway: Link **Yudh Abhyas** with its exact **army exercise** association for fast **Indian Defence GK** revision.