Concept:The partition of Bengal in 1905 was a major administrative decision taken under the British viceroy Lord Curzon, which sparked widespread nationalist protests.Explanation:Lord Curzon served as Governor-General and Viceroy of India. In 1905, he ordered the partition of Bengal. The province was too large to govern efficiently. The new province of East Bengal and Assam was created with Dhaka as its capital. This move was opposed by Indian nationalists, especially in West Bengal, who saw it as a divide-and-rule tactic. The agitation against partition gave rise to the Swadeshi movement and strengthened the Indian National Congress. The partition was eventually reversed in 1911, but it had already transformed Indian politics. Among the given options, only Lord Curzon was the Governor-General responsible for this event.Answer:A. Curzon