The correct answer is (a) Assam.
Assam is the largest producer of tea in India, accounting for over 50% of the country’s tea production. The state has a long history of tea cultivation, dating back to the early 19th century. The climate and soil in Assam are ideal for tea cultivation, and the state is home to some of the world’s oldest and most famous tea gardens.
Tamil Nadu is the second largest producer of tea in India, accounting for over 20% of the country’s tea production. The state has a number of tea gardens, but the industry is not as developed as in Assam.
Arunachal Pradesh is the third largest producer of tea in India, accounting for over 10% of the country’s tea production. The state has a number of tea gardens, but the industry is not as developed as in Assam or Tamil Nadu.
West Bengal is the fourth largest producer of tea in India, accounting for over 5% of the country’s tea production. The state has a number of tea gardens, but the industry is not as developed as in Assam, Tamil Nadu, or Arunachal Pradesh.