The correct answer is option A. Narnaul.
Silokhera Airstrip is an airstrip located in Narnaul district of Haryana, India. It is also known as Narnaul Airstrip. The airstrip is used for military purposes and is not open to the public.
The airstrip is located at a distance of about 100 kilometers from Delhi. It is a small airstrip with a single runway. The runway is about 1,500 meters long and 30 meters wide.
The airstrip is used by the Indian Air Force for training purposes. It is also used by the Indian Army for transportation purposes.
The airstrip is not open to the public. However, it is possible to visit the airstrip on a guided tour.
The other options are incorrect.
Option B, Gurugram, is a city in Haryana. It is not home to any airstrips.
Option C, Karnal, is a city in Haryana. It is home to Karnal Air Force Station. However, Karnal Air Force Station is not open to the public.
Option D, Hisar, is a city in Haryana. It is home to Hisar Air Force Station. However, Hisar Air Force Station is not open to the public.