Correct option is B
The central aspect of Mahatma Gandhi’s ideology was “Truth-force”, also known by the term Satyagraha. Derived from the Sanskrit words “Satya” (truth) and “Agraha”
• His ideas deeply influenced civil rights movements across the world, including those led by Martin Luther King Jr. and Nelson Mandela.
• Gandhi's first experiments with Satyagraha were in South Africa before he applied them in India.
• Gandhiji applied this principle in several movements such as:
Champaran Satyagraha (1917)
Kheda Satyagraha (1918)
Non-Cooperation Movement (1920)
Salt March / Dandi March (1930)