The correct answer is: B. Ghaggar
The Ghaggar River is a seasonal river in the northern Indian states of Haryana, Punjab, and Rajasthan. It is a tributary of the Indus River. The Ghaggar is one of the oldest rivers in India and is mentioned in the Rig Veda. The river is currently dry for most of the year, but it used to be a major source of water for irrigation and drinking water.
The Morni Hills are a mountain range in the Indian state of Haryana. The hills are located in the Ambala district and are a popular tourist destination. The Tipra Hills are a mountain range in the Indian state of Punjab. The hills are located in the Gurdaspur district and are a popular tourist destination.
The Ghaggar River separates the Morni Hills from the Tipra Hills. The river flows through the Ambala district of Haryana and the Gurdaspur district of Punjab. The Ghaggar River is a seasonal river and is dry for most of the year. The river is a popular tourist destination and is a good place for fishing and boating.
The other options are incorrect because they are not rivers that separate the Morni Hills from the Tipra Hills. The Yamuna River is a river in northern India. The river is a tributary of the Ganges River. The Ghaggar River is a seasonal river in the northern Indian states of Haryana, Punjab, and Rajasthan. The river is a tributary of the Indus River. The Saraswati River is a mythical river in India. The Markonda River is a river in the Indian state of Maharashtra.