The correct answer is: A. Eastern
The Yamuna River is a major river in India and the second-largest tributary of the Ganges. It flows through the states of Uttarakhand, Uttar Pradesh, Haryana, Delhi, and Rajasthan. The Yamuna River is a sacred river in Hinduism and is considered to be one of the seven holy rivers of India.
The Yamuna River flows along the eastern boundary of Haryana. The river enters Haryana from Uttar Pradesh near the town of Panipat. It flows through the districts of Sonipat, Faridabad, Gurgaon, and Rewari before crossing into Rajasthan. The Yamuna River is a major source of irrigation for Haryana. It is also a popular tourist destination, with many temples and shrines located along its banks.
The other options are incorrect because the Yamuna River does not flow along the northern, western, or southern boundaries of Haryana.