(d) Vallabhbhai Patel
Vallabhbhai Patel led the peasant movement in Bardoli in 1928, known as the Bardoli Satyagraha, against enhancement of land revenue.
Source: Chapter 2, Section 2.2 – Rebellion in the Countryside
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The passage clearly states: "In 1928, Vallabhbhai Patel led the peasant movement in Bardoli, a taluka in Gujarat, against enhancement of land revenue." Note that Baba Ramchandra led peasants in Awadh (UP) in 1918–19, not Bardoli — a common confusion point in exams. Always link Bardoli Satyagraha with Vallabhbhai Patel; this is how he earned the title "Sardar".