Explanations:The Gandak River is a significant river in the region of Bihar, India, and is known for its origin and confluence points. The river originates from the Nepal-China border in Tibet, which is a high-altitude region in the Himalayas. It flows through Nepal and then enters India, where it continues its course until it meets the Ganges River near Hajipur in Bihar. This confluence is a notable geographical feature and is important for understanding the river systems in the region.
The Gandak River is part of the larger Ganges River system, which is one of the most important river systems in India. The Ganges River itself originates from the Gangotri Glacier in the Himalayas and flows through several states before reaching the Bay of Bengal. The Gandak River, being a tributary of the Ganges, plays a crucial role in the hydrology and ecology of the region.
Understanding the origins and confluence points of rivers is essential for geographical studies, especially in the context of competitive examinations where questions often test the knowledge of river systems and their geographical significance. The Gandak River, originating from the Nepal-China border and joining the Ganges near Hajipur, is a specific example that highlights the interconnectedness of river systems in the region.
It is important to note that the Gandak River is not the only river in the region that flows through Bihar. Other rivers such as the Kosi, Mahananda, and Gomti also play significant roles in the geography and hydrology of the area. However, each of these rivers has distinct origins and confluence points, which differentiate them from the Gandak River.
The Kosi River, for instance, originates from the Tibetan plateau and flows through Nepal and India before joining the Ganges near Kursela in Bihar. The Mahananda River originates in West Bengal and flows through West Bengal, Bihar, and Bangladesh before joining the Ganges near Bhagalpur in Bihar. The Gomti River, on the other hand, originates in Uttar Pradesh and joins the Ganges near Kaushambi, Uttar Pradesh.
Thus, the Gandak River is uniquely identified by its origin from the Nepal-China border in Tibet and its confluence with the Ganges near Hajipur in Bihar, making it the correct answer to the question.