The correct answer is Verghese Kurien.
Verghese Kurien was an Indian social entrepreneur who is considered the father of the White Revolution in India, also known as the Operation Flood. He was the founder of the Amul dairy cooperative movement, which helped to revolutionize the dairy industry in India and make milk affordable for millions of people.
Dhirubhai Ambani was an Indian industrialist who founded the Reliance Group, one of the largest private sector companies in India. He is considered to be one of the most successful entrepreneurs in Indian history.
Ratan Tata is an Indian industrialist who served as the chairman of Tata Sons, the holding company of the Tata Group, from 1991 to 2012. He is considered to be one of the most respected business leaders in India.
Azim Premji is an Indian business tycoon who is the chairman of Wipro Limited, one of the largest IT companies in India. He is considered to be one of the richest people in India.
Verghese Kurien is the only option who is not a businessman. He was a social entrepreneur who dedicated his life to improving the lives of the poor and marginalized. He is a true hero and an inspiration to us all.