The correct answer is: a) Rice.
Rice is the primary staple food grain consumed in Andhra Pradesh. It is a major source of carbohydrates, dietary fiber, and protein. Rice is also a good source of vitamins and minerals, including thiamin, niacin, iron, and magnesium.
Wheat is the second most important staple food grain in Andhra Pradesh. It is a good source of carbohydrates, protein, and fiber. Wheat is also a good source of vitamins and minerals, including thiamin, niacin, iron, and magnesium.
Millet is a type of grass that is grown for its edible seeds. Millet is a good source of carbohydrates, protein, and fiber. Millet is also a good source of vitamins and minerals, including thiamin, niacin, iron, and magnesium.
Maize is a type of grass that is grown for its edible seeds. Maize is a good source of carbohydrates, protein, and fiber. Maize is also a good source of vitamins and minerals, including thiamin, niacin, iron, and magnesium.
However, rice is the most popular and widely consumed staple food grain in Andhra Pradesh. It is grown in all parts of the state and is a major source of livelihood for the people of Andhra Pradesh.