Identify the Odd One Out:

The correct answer is Option (3) → Mahanadi River

The distinction here is based on the direction of flow and where the rivers empty into the sea:

• Mahanadi River: It is an East-flowing river. It originates in Chhattisgarh and flows through Odisha to drain into the Bay of Bengal.

• Tapti, Narmada, and Mandovi: These are all West-flowing rivers. They flow towards the west coast and drain into the Arabian Sea.