In which state is the highest proportion of Buddhists found in India?

Sikkim

The correct answer is Option 3: Sikkim

The highest proportion of Buddhists is found in Sikkim (27%) and Arunachal Pradesh (12%), while among the larger states Maharashtra has the highest share of Buddhists at 6%

Note: The question asks about the proportions that is percentage of Buddhist in the total population and not absolute number of Buddhists. If the question was related to absolute number, then Maharashtra would have been the answer.