निम्नलिखित में से किसे फ्लोराइड का एक महत्वपूर्ण प्राकृतिक आहार स्रोत माना जाता 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?