वाक्य के उस भाग की पहचान करें जिसमें व्याकरण संबंधी त्रुटि है: "Since his arrival at his (A) / native town he is trying (B) / to the best of his ability (C) / to spread education among the masses (D)."

The arrival of which commission in India triggered widespread protests, including mass hartals across the country in 1928?

Which of the following leaders was instrumental in initiating and leading India’s struggle for independence?