The correct answer is (d), 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 is the longest tributary of the Ganges, and it is the 15th longest river in India. The Son has a drainage basin of 100,000 square kilometers. The river is a major source of irrigation and drinking water for millions of people in India.
The Brahmaputra is a river in Asia that flows through China, India, and Bangladesh. It is the longest river in India, and the third longest river in Asia. The Brahmaputra is a major source of irrigation and drinking water for millions of people in India and Bangladesh.
The Yamuna is a river in India that flows through the states of Uttarakhand, Uttar Pradesh, Haryana, and Delhi. It is a tributary of the Ganges River. The Yamuna is the second longest tributary of the Ganges, and it is the seventh longest river in India. The Yamuna has a drainage basin of 366,000 square kilometers. The river is a major source of irrigation and drinking water for millions of people in India.
The Kosi is a river in India that flows through the states of Bihar and Nepal. It is a tributary of the Ganges River. The Kosi is the most destructive river in India. It is known for its frequent floods, which have caused widespread damage and loss of life. The Kosi has a drainage basin of 90,000 square kilometers.