प्रसार शिक्षा में प्रयुक्त 'विधि प्रदर्शन' (Method Demonstration) तकनीक मुख्य रूप से निम्नलिखित में से किस सिद्धांत को लागू करती 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?