Which of the following rivers is known as “Sorrow of Bihar”?

Correct option is B

Introduction
The Kosi River is famously known as the “Sorrow of Bihar”. This is because the river frequently changes its course and causes devastating annual floods in the northern plains of Bihar, which result in widespread loss of life, property, and agricultural land. The river's enormous sediment load and unstable path are the primary reasons for this recurring destructive nature.
Information Booster
· Local Name: Known as the "Sorrow of Bihar" due to its annual, destructive flooding.
· Geographical Issue: The river is notorious for its frequent and sudden changes in its course.
· Reason for Floods: It carries an immense load of silt and sediment from the Himalayas, which it deposits on the plains, raising its bed and causing it to overflow or shift course.
· Origin: It is a transboundary river that flows through Nepal and India.
· Tributary: It is a major tributary of the Ganga River.
Additional Points
· Tista: A river in Sikkim and West Bengal, known for its sudden floods in the past, but the Kosi is consistently and historically referred to as the "Sorrow of Bihar".
· Gandak: A major tributary of the Ganga that flows through Nepal and Bihar, but not the river most commonly associated with the moniker "Sorrow of Bihar".
· Son: A tributary of the Ganga that originates in Madhya Pradesh and flows through Bihar, but is not the river associated with the most destructive floods.