'तत्त्वबोधिनी पत्रिका' की स्थापना निम्नलिखित में से किसके द्वारा की गई थी?

Which of the following factors contributed to the growth of militant nationalism (extremism) in India in the early 20th century?

On which date in 1920 did the Khilafat Committee officially launch its Non-Cooperation Movement in All-India Hartal?