A) Lord Dalhousie
B) Lord Curzon
C) Lord Mountbatten
D) Lord Wellesley
Answer: A) Lord Dalhousie
Explanation: The Doctrine of Lapse was a policy devised by Lord Dalhousie, the Governor-General of India from 1848 to 1856, which allowed the British to annex Indian states if the ruler died without a male heir.