The correct answer is C. Kalka.
Fairy Queen is a steam locomotive that was built in 1855 by the Beyer, Peacock and Company of Manchester, England. It was originally used to haul trains on the Kalka-Shimla Railway in India. The railway was built in the 1850s to connect the hill station of Shimla with the plains of India. The railway is a UNESCO World Heritage Site and is considered to be one of the most scenic railways in the world.
Fairy Queen is the oldest steam locomotive in regular operation in the world. It is still used to haul tourist trains on the Kalka-Shimla Railway. The train departs from Kalka station in the morning and arrives in Shimla in the evening. The journey takes about 8 hours and passes through some of the most beautiful scenery in India.
The other options are incorrect because they are not the destinations of the Fairy Queen train. Option A, Shimla, is a hill station in the Indian state of Himachal Pradesh. Option B, Alwar, is a city in the Indian state of Rajasthan. Option D, Gwalior, is a city in the Indian state of Madhya Pradesh.