The correct answer is (d). The Lucknow Pact was signed on December 26, 1916, between the Indian National Congress and the All-India Muslim League. The pact was a major step forward in Hindu-Muslim unity, and it paved the way for the joint struggle for independence from British rule.
The pact agreed on a number of important issues, including separate electorates for Muslims, a system of weightage for Muslims in the legislatures, and the recognition of Urdu as a national language. The pact also called for the establishment of a national government in India, with equal representation for Hindus and Muslims.
The Lucknow Pact was a significant achievement for the Indian independence movement. It showed that Hindus and Muslims could work together to achieve a common goal, and it gave the movement a much-needed boost of unity and strength.
The other options are incorrect. Option (a), 1913, is incorrect because the Lucknow Pact was signed in 1916. Option (b), 1914, is incorrect because the First World War began in 1914, and the Lucknow Pact was signed in the middle of the war. Option (c), 1915, is incorrect because the Lucknow Pact was signed in December 1916, and 1915 is an earlier year.