किस प्रकार की प्रतिचयन (sampling) प्रक्रिया में जैसे-जैसे अध्ययन आगे बढ़ता है, प्राथमिक विषय secondary विषयों को शामिल करते हैं और नमूना बड़ा होता जाता है?

Which Indian independence movement leader was primarily known for his philosophy and practice of non-violent civil disobedience?

Who gave the call for 'Do or Die' during the Quit India Movement in 1942?

Which of the following revolutionary pairs were imprisoned together in Cellular Jail and faced harsh conditions, contributing significantly to the Indian independence movement?