The correct option is B Indigo Revolt in Bengal, 1859
Indian farmers were compelled to grow indigo, due to a rise in its demand. They were given less than 2.5% of what it fetched in the market. In 1859, the Indigo peasants of Bengal rebelled against the planters which resulted in bloodshed. An Indigo commission report recorded that "not a chest of Indigo reached England without being stained with human blood".