निम्नलिखित मनोवैज्ञानिकों में से किसने पूछताछ-आधारित शिक्षा की 'खोज अधिगम' (Discovery Learning) पद्धति की शुरुआत की?

Which movement aimed to promote Khadi, a hand-spun and handwoven cloth native to India?

Who were prominent leaders associated with the initial phase of the Telangana Rebellion (1946-1951) against the Nizam's rule and feudal landlords?

What was the immediate trigger for the Revolt of 1857?