Concept:A settlement that develops at the point where two rivers join is called a confluence town.
Explanation:A confluence is the place where two or more rivers flow together and merge into one stream.
When a settlement grows at this meeting point, it is known as a confluence town.
Such towns often thrive because rivers provide water, transport, and trade opportunities.
A nodal town refers to a settlement at a transport or route junction, not specifically at a river meeting.
Linear and nucleated settlements describe the shape or pattern of a settlement, not its position at a river junction.
Therefore, the best description for a settlement where two rivers meet is the option that is directly named after the point of river convergence.
Answer:D. confluence town