Correct Answer: It marked the reunion of the moderate and radical wings of the Congress.

Solution : The correct option is It marked the reunion of the moderate and radical wings of the Congress .

During this time, the Congress was split into two main factions: moderates and extremists, or radicals. The division had already taken place, with the extremists, led by individuals such as Bal Gangadhar Tilak and Bipin Chandra Pal, and the moderates, led by leaders like Gopal Krishna Gokhale. In their pursuit of self-rule, the radicals called for bold and more direct action, while the moderates favoured a more cautious and constitutional approach. The Muslim League and the Congress, which was still split between moderates and radicals, worked together to create the Lucknow Pact of 1916. With this cooperation, the British government would be asked to implement constitutional changes under a unified front.