The principal cereal crop in India is

The correct option is B

rice

The correct option is B.

Explanation of correct option:

1. Rice is among India's most important crops, and it is grown in practically all of the country's states.
2. India is the world's second-biggest rice producer as well as the world's largest rice exporter.
3. As a result, in comparison to other cereal crops, it is India's most important cereal crop. West Bengal, Punjab, and Uttar Pradesh states are the top three producers in India.

Explanation of incorrect options

Option A:

1. Uttar Pradesh, Punjab, Haryana, Madhya Pradesh, Rajasthan, Bihar, and Gujarat are the leading wheat-producing states in India.

Option C:

1. Bihar produces the most maize after Karnataka and Madhya Pradesh.
2. But the state with the highest productivity is Andhra Pradesh.

Option D:

1. Maharashtra, Gujarat, Karnataka, Rajasthan, Andhra Pradesh, Madhya Pradesh, and Tamil Nadu are the main sorghum-growing states in India for grain sorghum, whereas Haryana, Uttar Pradesh, Uttarakhand, and Delhi grow forage sorghum.

Final Answer: The principal cereal crop in India is rice.