The correct option is B It laid foundation for future freedom struggles.
The Revolt of 1857, though no one knew at that time, was the First War of Indian Independence. It laid the foundation for the future freedom struggles. Subash Chandra Bose called it the "First War of Independence". Savarkar referred to it as a "War of independence". Writers like Malleson and J.B.Norton also opined that it was an organised move to drive the British out of India.