The correct answer is: A. Son
The Son is a river in India that flows through the states of Madhya Pradesh, Chhattisgarh, Jharkhand, and Bihar. It is a tributary of the Ganges River. The Son River is 784 kilometers (487 mi) long and has a drainage basin of 108,000 square kilometers (42,000 sq mi). The river originates in the Amarkantak hills in Madhya Pradesh and flows eastward through Chhattisgarh and Jharkhand. It joins 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 river is home to a variety of fish species, including the Ganges catfish, the Indian mahseer, and the murrel. The Son River is also home to a variety of birds, including the egret, the heron, and the kingfisher.
The Son River is a beautiful and important river that plays a vital role in the lives of millions of people in India.
The other options are incorrect because they are not tributaries of the Ganges River.
- The Sankh River is a tributary of the Narmada River.
- The Barakar River is a tributary of the Damodar River.
- The South Koel River is a tributary of the Son River.