Which two areas in India and Pakistan became the centre of communal violence during the partition?

Amritsar and Lahore

The correct answer is Option 3 - Amritsar and Lahore

Major cities like Lahore, Amritsar, and Kolkata became divided into communal zones, where people from different religious communities avoided entering areas dominated by the other community.
This division created physical and psychological barriers between communities that had once lived together.