The river Yamuna flows on the ……. boundary of the Haryana.

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.