Correct Answer: Both assertion and reason are true, and the reason is the correct explanation of the assertion.

Solution : The correct answer is (a) Both assertion and reason are true, and the reason is the correct explanation of the assertion.

The assertion is true because the Partition of India was a highly divisive event that led to widespread violence and displacement. The reason is also true because the partition was based on religious lines, which created two new states with very different religious demographics. This led to a great deal of tension and violence between Hindus and Muslims, as people on both sides of the border were forced to leave their homes and belongings.

The reason is the correct explanation of the assertion because it explains why the partition led to communal violence and large-scale migration. The religious divide created by the partition was a major factor in the violence, as people on both sides of the border were afraid of what would happen to them if they remained in the other state. This fear led to a great deal of violence and displacement, as people tried to flee to the state where they felt they would be safer.