The correct answer is: a) Rainfed crops.
Rainfed crops are crops that are grown without the use of irrigation. They rely on rainfall for their water needs. Rainfed crops are grown in areas where there is sufficient rainfall, such as in tropical and subtropical regions.
The monsoon season is a period of heavy rainfall that occurs in tropical and subtropical regions. The monsoon season is crucial for agriculture in Tamil Nadu because it provides the water that is needed for rainfed crops to grow. Without the monsoon season, rainfed crops would not be able to grow and Tamil Nadu would not be able to produce the food that it needs.
Irrigated crops are crops that are grown with the use of irrigation. Irrigation is the process of artificially applying water to crops. Irrigation is used in areas where there is not enough rainfall to support rainfed crops.
Horticulture is the science and art of growing fruits, vegetables, flowers, and ornamental plants. Horticulture is practiced in both tropical and temperate regions.
Plantation crops are crops that are grown on large plantations. Plantation crops include crops such as coffee, tea, rubber, and sugar cane. Plantation crops are grown in tropical and subtropical regions.