The correct answer is: Vallabhbhai Patel.
Vallabhbhai Patel was the first Deputy Prime Minister of India and the Home Minister of India. He is also known as the Iron Man of India for his role in uniting the 562 princely states of India into the Indian Union.
The Statue of Unity is a 182-metre (597 ft) tall statue of Patel, located on the Sardar Sarovar Dam on the Narmada River in Gujarat, India. It is the tallest statue in the world, and was inaugurated on 31 October 2018.
Mahatma Gandhi was the leader of the Indian independence movement against British rule. He is internationally honored for his philosophy of nonviolence and his leadership of the Indian independence movement. He is often called Mahatma, which means “high-souled”.
B.R. Ambedkar was an Indian jurist, economist, politician, and social reformer who played a leading role in the drafting of the Constitution of India. He is also known as the Father of the Indian Constitution.
Indira Gandhi was the first and only female Prime Minister of India. She was the daughter of Jawaharlal Nehru, the first Prime Minister of India. She served as Prime Minister from 1966 to 1977 and again from 1980 to 1984.