The correct answer is: c. Son Hazaribagh
The Son River is a major river in India, flowing through the states of Jharkhand, Bihar, Uttar Pradesh, and Madhya Pradesh. It is a tributary of the Ganges River. The Son River originates in the Hazaribagh district of Jharkhand. It is formed by the confluence of the Son and the Damodar rivers. The Son River flows for a distance of about 780 kilometers before joining the Ganges River near Patna, Bihar. The Son River is an important source of water for irrigation and drinking water. It is also a popular destination for fishing and boating.
The other options are incorrect because:
- Option a: The Panchahan River is a tributary of the Son River. It originates in the Palamu district of Jharkhand.
- Option b: The Falgu River is a tributary of the Ganges River. It originates in the Santhal Pargana district of Jharkhand.
- Option d: The Sankh River is a tributary of the Son River. It originates in the Gumla district of Jharkhand.