Explanation:

- Correct Answer: Option 2 - MM Naravane

- General Manoj Mukund Naravane, the Chief of Army Staff of the Indian Army at that time, was conferred the honorary rank of General of the Nepali Army in November 2020. This is a tradition reflecting the close ties between the Indian and Nepali militaries.

- Option 1: Karambir Singh

- Admiral Karambir Singh served as the Chief of the Naval Staff of the Indian Navy from 2019 to 2021. He was not conferred the honorary rank by the Nepali Army.

- Option 3: Bipin Rawat

- General Bipin Rawat was the first Chief of Defence Staff of India and served as Chief of Army Staff prior to that. He was conferred the same honorary rank by Nepal when he was Chief of Army Staff, but not in 2020.

- Option 4: Rakesh Kumar Singh Bhadauria

- Air Chief Marshal Rakesh Kumar Singh Bhadauria served as the Chief of the Air Staff of the Indian Air Force. Like Karambir Singh, he was not conferred the honorary rank by the Nepali Army.

The honorary rank tradition between India and Nepal is a gesture of mutual respect and camaraderie.