Correct option is A
Kerala is famous for cultivating a variety of spices such as pepper, cardamom, and cinnamon. It has a long history of spice trade with foreign lands. Explanation of options: (a) ✔ Kerala is historically and economically known for spices. (b) ✘ Tamil Nadu grows some spices but not dominant. (c) ✘ Gujarat is known for cotton and groundnut, not spices. (d) ✘ Andhra Pradesh is known for red chilli, not overall spice variety.