The correct answer is (a) Kabini River.
The Kabini River is a tributary of the Kaveri River. It originates in the Wayanad district of Kerala and flows through the Kodagu district of Karnataka. The river forms a part of the border between Kerala and Karnataka. The Kabini Dam is located on the Kabini River. The dam is a major source of irrigation and hydroelectric power for both Kerala and Karnataka.
The Chaliyar River is a river in Kerala. It originates in the Western Ghats and flows through the Palakkad district. The river joins the Bharathappuzha River near Pattambi. The Chaliyar River is a major source of irrigation for the Palakkad district.
The Periyar River is a river in Kerala. It originates in the Western Ghats and flows through the Idukki district. The river joins the Arabian Sea near Alleppey. The Periyar River is a major source of irrigation and hydroelectric power for Kerala.
The Pamba River is a river in Kerala. It originates in the Western Ghats and flows through the Pathanamthitta district. The river joins the Arabian Sea near Kollam. The Pamba River is a major source of irrigation and hydroelectric power for Kerala.