Why Correct: Maharashtra leads India in industrial output, manufacturing value addition, and factory count, with major hubs in Mumbai, Pune, and Nagpur.
Distractor Analysis: Gujarat ranks second with strong petrochemical and chemical industries. Tamil Nadu has a diversified base including automotive and textiles. Punjab has significant agro-based industries but lags in overall industrial advancement.
Takeaway: Maharashtra contributes over 15% to India's industrial output and houses the largest number of Special Economic Zones.