The correct answer is A. 191 km.
The Ghaggar River is a seasonal river in the Indian states of Haryana and Punjab. It is a tributary of the Sutlej River. The Ghaggar River is 191 kilometers long and originates in the Shivalik Hills of Himachal Pradesh. The river flows through the states of Haryana and Punjab before joining the Sutlej River in Pakistan. The Ghaggar River is a major source of irrigation for the states of Haryana and Punjab. The river is also a popular tourist destination.
Option B is incorrect because the Ghaggar River is 191 kilometers long, not 251 kilometers.
Option C is incorrect because the Ghaggar River is 191 kilometers long, not 291 kilometers.
Option D is incorrect because the Ghaggar River is 191 kilometers long, not 311 kilometers.