___________ is known as the Iron Man of India.

Vallabhbhai Patel

The correct answer is Option (3) → Vallabhbhai Patel

Sardar Vallabhbhai Patel, often referred to as the Iron Man of India, was a prominent leader and statesman during India's independence movement. He played a crucial role in integrating princely states into the Indian Union after independence, earning him the title of "Iron Man" for his strong leadership and unifying efforts. Patel served as the first Deputy Prime Minister and Home Minister of independent India, and his contributions to nation-building and unity are widely acknowledged and celebrated in Indian history.