'If a defective part or equipment malfunction is discovered, the machine automatically stops and operators stop work and correct the problem rather than continuing production' - This statement describes the principle of:

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?