This is the correct option.
Water sources determined where people chose to settle
Step-by-step explanation:
The geography of the Indus River Valley influence where people settled the same way as it did across the world in the time of the early civilizations.
The people preferred to settle on the lands where there was a steady supply of water and the land was fertile because of the flooding every season.
This is what was the basis of the farming and the situation of the trade of the time and made it so that the civilization could settle in those regions.