The correct answer is: A. Yamunanagar
The world’s shortest and widest national highway will be built in Yamunanagar, Haryana. The highway will be 1.5 kilometers long and 100 meters wide. It will be built at a cost of Rs. 100 crore. The highway will connect the Yamunanagar-Jagadhri bypass with the National Highway 709. It will help in decongesting the traffic in Yamunanagar city. It will also boost the economic development of the region.
Option B is incorrect because Gurugram is a city in Haryana. The highway will not be built in Gurugram.
Option C is incorrect because Kaithal is a district in Haryana. The highway will not be built in Kaithal.
Option D is incorrect because the highway will be built in Yamunanagar.