किसी भी आव्यूह (मैट्रिक्स) का सरलीकृत पंक्ति सोपानक रूप (reduced row echelon form) होता है:

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?