The correct answer is option 1, rice. In India, rice is the most commonly consumed staple cereal. Rice is a major part of the Indian diet and is consumed in various forms such as boiled rice, biryani, pulao, and idli. It is a versatile grain that is widely cultivated and consumed across different regions of the country. Rice is rich in carbohydrates and provides essential nutrients like vitamins and minerals. It is a staple food in many Indian households and is often served with a variety of curries, lentils, and vegetables. While options 2, 3, and 4 are also consumed in India, rice takes the lead as the most commonly consumed staple cereal.