Correct Option: B

National Highway-1 (NH-1), also known as Srinagar-Leh Highway, is a National Highway entirely within the state of Jammu & Kashmir in North India that connects Srinagar to Leh in Ladakh and is maintained by Project Vijayak of the Border Roads Organization. It is one of the highest roads in the world. Running between the Indian cities of Leh and Manali, it opens up an inhospitable part of the Himalaya Mountains.