Explanation:

The Darbuk-Shyok-Daulat Beg Oldie (DSDBO) road has been in the making for around two decades and is expected to be completed by 2020.
Key Points

• The road from Darbuk traverses at an altitude of 14,000 feet and reaches Shyok, the last Indian village in the region.
• Between Shyok and Karakoram Pass (that divides Ladakh from China’s Xinjiang province) lies Daulat Beg Oldie (DBO).
• It is located only 9 km away from the Line of Actual Control with China and the road will help manage the border and the areas adjoining Aksai Chin, Chip Chap River and Jiwan Nalla. Hence option 1st is correct.
• It will also ensure faster deployment of troops in the area. Before the laying of the road, the only way to reach the area was via the ALG, where heavy-lift aircraft, such as the C-130J, can land.