The correct answer is A. Rice.
Rice is the most important crop in Bihar, accounting for over 40% of the state’s cultivated area. It is grown in both the Kharif (rainy) and Rabi (winter) seasons. The main rice-growing areas are the Gangetic plain and the Chota Nagpur plateau.
Wheat is the second most important crop in Bihar, accounting for over 20% of the state’s cultivated area. It is grown in the Rabi season. The main wheat-growing areas are the Gangetic plain and the northern part of the Chota Nagpur plateau.
Maize is the third most important crop in Bihar, accounting for over 10% of the state’s cultivated area. It is grown in both the Kharif and Rabi seasons. The main maize-growing areas are the Gangetic plain and the southern part of the Chota Nagpur plateau.
Ragi is a minor crop in Bihar, accounting for less than 5% of the state’s cultivated area. It is grown in the Kharif season. The main ragi-growing areas are the Chota Nagpur plateau and the hills of the eastern part of the state.
Rice is a staple food in Bihar and is consumed by people of all social classes. It is also used to make a variety of dishes, such as rice pudding, biryani, and pulao. Wheat is another staple food in Bihar and is used to make a variety of dishes, such as roti, chapati, and paratha. Maize is a popular grain in Bihar and is used to make a variety of dishes, such as cornbread, cornmeal mush, and hominy grits. Ragi is a millet that is grown in Bihar and is used to make a variety of dishes, such as ragi porridge, ragi roti, and ragi dosa.