शैक्षिक तकनीकी में अभिक्रमित अनुदेशन (Programmed learning) मुख्य रूप से किसके सिद्धांतों पर आधारित 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?