Correct option is C
The statement "Congress is tottering to its fall and one of my great ambitions while in India is to assist it to a peaceful demise" was made by:(c) Curzon.
Lord Curzon, the Viceroy of India from 1899 to 1905, is known for his policies and actions that significantly impacted the Indian political landscape, including the partition of Bengal in 1905, which indirectly led to the strengthening of the Indian National Congress rather than its demise.