The correct answer is A. 1952.
The Jagadhri Railway Carriage and Wagon Workshop was established in 1952. It is a major workshop of the Indian Railways, located in Jagadhri, Haryana. The workshop is responsible for the maintenance and repair of railway carriages and wagons. It also manufactures new carriages and wagons. The workshop has a workforce of over 5,000 employees.
The other options are incorrect. Option B, 1972, is the year in which the Integral Coach Factory was established in Chennai. Option C, 1962, is the year in which the Diesel Locomotive Works was established in Varanasi. Option D, 1942, is the year in which the Chittaranjan Locomotive Works was established in Chittaranjan, West Bengal.