The correct answer is: Tea.
Tamil Nadu is the second largest producer of tea in India, after Assam. The tea industry in Tamil Nadu is concentrated in the Nilgiris district, which is known for its high-quality tea. The tea industry in Tamil Nadu employs over 1 million people and contributes significantly to the state’s economy.
Cotton is a major cash crop in India, but Tamil Nadu is not a major producer. The state’s cotton production is concentrated in the southern districts of Madurai, Ramanathapuram, and Sivaganga.
Sugarcane is another major cash crop in India, but Tamil Nadu is not a major producer. The state’s sugarcane production is concentrated in the northern districts of Tiruchirappalli, Thanjavur, and Pudukottai.
Coffee is a major cash crop in India, but Tamil Nadu is not a major producer. The state’s coffee production is concentrated in the western districts of Coimbatore, Dindigul, and Theni.
In conclusion, Tamil Nadu is a leading producer of tea. The tea industry in Tamil Nadu is concentrated in the Nilgiris district, which is known for its high-quality tea. The tea industry in Tamil Nadu employs over 1 million people and contributes significantly to the state’s economy.