Answer : 2. "तमिलनाडु"
Explanation :

The Cumbum Valley, known as the “Grape City of South India”, is known for the Panneer Thrachai grape, which accounts for 85% of India's production. Introduced by a French priest in 1832, these grapes flourish year-round, unlike elsewhere. Recognized for its rapid growth and early maturity, it earned the Geographical Indication tag in 2023. Nutrient-rich Cumbum Valley grapes are used for wines, spirits and more. Its location in the Western Ghats of Tamil Nadu adds to its attraction.