Correct option is C
Lord Mayo served as the Viceroy of India from 1869 to 1872. On February 8, 1872, while on a tour of the Andaman and Nicobar Islands, he was inspecting the British penal settlement when he was assassinated by a convict named Sher Ali Afridi. This incident made Lord Mayo the only Viceroy of India to be murdered while in office. His assassination was a significant event, highlighting the dangers faced by colonial officials in India.