The title of 'Sardar' to Vallabh Bhai Patel was given during which of the following satyagraha?

Bardoli

The correct answer is Option 1 - Bardoli

The title of 'Sardar' to Vallabh Bhai Patel was given during the Bardoli Satyagraha.

The Bardoli Satyagraha was a no-tax movement that took place in Bardoli, Gujarat, India, from 1928 to 1929. It was led by Vallabhbhai Patel and was a major success for the Indian independence movement. The movement forced the British government to reduce taxes and was a major victory for the farmers of Bardoli.

Patel was given the title of 'Sardar', which means 'chief' or 'leader', for his leadership during the Bardoli Satyagraha. He was also known as the 'Iron Man of India' for his strong resolve and determination.

The Champaran Satyagraha, Ahmedabad Mill Strike, and Non-Cooperation Movement were also important events in the Indian independence movement, but Patel was not given the title of 'Sardar' during any of these events.