The correct answer is c) Rubber.
Rubber is a plantation crop that is grown in the midland and high ranges of Kerala. It is a perennial plant that is native to the Amazon rainforest. Rubber is a valuable commodity that is used in a variety of products, including tires, shoes, and gloves.
Tea is a plantation crop that is grown in the high ranges of Kerala. It is an evergreen shrub that is native to Asia. Tea is a popular beverage that is consumed all over the world.
Coffee is a plantation crop that is grown in the midland and high ranges of Kerala. It is a small, evergreen tree that is native to Africa. Coffee is a popular beverage that is consumed all over the world.
Cashew is a plantation crop that is grown in the low ranges of Kerala. It is a tropical tree that is native to Brazil. Cashew nuts are a popular snack food.
Rubber is the most important plantation crop in Kerala. It is grown on about 1.5 million hectares of land in the state. Rubber is a major source of employment for the people of Kerala. The state produces about 600,000 tonnes of rubber per year. Rubber is exported to a number of countries, including the United States, China, and Japan.