Explanations:The Son River is a significant tributary of the Ganga River, and understanding its geographical features is essential for comprehending the river systems in central and eastern India. The Son River originates in the Amarkantak Plateau, which is located in the state of Madhya Pradesh. This plateau is a crucial geographical feature as it is the source of several important rivers, including the Narmada and the Mahanadi, in addition to the Son River.
The Son River flows through the states of Madhya Pradesh, Chhattisgarh, and Uttar Pradesh before joining the Ganga River at Arrah in Bihar. The confluence of the Son and the Ganga is a significant geographical point, as it marks the end of the Son River's journey and its integration into the larger Ganga river system. This confluence is also an important site for religious and cultural activities, as the Ganga is considered a sacred river in Hinduism.
It is important to note that the Son River joins the Ganga on the right bank, which is typically considered the south bank. This detail is crucial for understanding the geographical context of the river's course and its tributaries. The Son River is not a large west bank tributary of the Ganga, as the west bank tributaries are generally those that join the Ganga from the left side, which is the north bank.
Therefore, the correct statements are that the Son River originates in the Amarkantak Plateau and joins the Ganga at Arrah, Bihar. These statements are accurate and reflect the geographical reality of the Son River's course and its confluence with the Ganga. Understanding these geographical features is essential for students studying the river systems of India and their significance in the region's geography and culture.