Which one of the following areas of India produces largest amount of cotton?

1. The question asks about the area of India that produces the largest amount of cotton. 2. Cotton cultivation in India is primarily concentrated in the Deccan Plateau region and the northwestern plains. 3. Key cotton-producing states include Gujarat, Maharashtra, Telangana, Andhra Pradesh, Karnataka (Western and Southern India), and Punjab, Haryana, Rajasthan (North-western India). 4. North-western India (Punjab, Haryana, Rajasthan) is a significant cotton belt. 5. Western India (Gujarat, Maharashtra) is traditionally the largest cotton-producing zone. 6. Southern India (Telangana, Andhra Pradesh, Karnataka, Tamil Nadu) is also a major producer. 7. Gangetic West Bengal and the Plains of Northern India (beyond the NW region) are not the primary cotton areas. 8. Combining the major regions, North-western and Western India together account for the bulk of India's cotton production. Option B captures these two major zones.