The correct answer is: A. Sansar Fort
Kutlehar Fort is also known as Sansar Fort. It is a 16th-century fort located in the town of Kutlehar in the Solan district of Himachal Pradesh, India. The fort was built by the Katoch rulers of Kangra. It is a well-preserved fort and is open to the public.
The fort is located on a hilltop and has a commanding view of the surrounding area. It is surrounded by a moat and has a number of bastions. The fort has two main gates, the Hathi Pol (Elephant Gate) and the Naulakha Pol (Nine Jewels Gate). The fort also has a number of temples and palaces.
The fort is a popular tourist destination and is a great place to learn about the history of the region.
Option B, Solanki Fort, is incorrect because the fort is not known by that name.
Option C, Kangri Fort, is incorrect because the fort is not located in Kangra district.
Option D, Solasingi Fort, is incorrect because the fort is not known by that name.