The correct answer is A. Shahabad.
Shahabad is a city in Kurukshetra district of Haryana, India. It is located on the banks of the Ghaggar River, about 100 kilometers from the state capital, Chandigarh. Shahabad is a major sugar-producing region in Haryana. The city has a number of sugar mills, which produce sugar from sugarcane. The sugar mills in Shahabad are a major source of employment for the local population.
The other options are incorrect.
B. Ladwa is a town in Kurukshetra district of Haryana, India. It is located about 80 kilometers from the state capital, Chandigarh. Ladwa is not a major sugar-producing region.
C. Pehowa is a town in Kurukshetra district of Haryana, India. It is located about 90 kilometers from the state capital, Chandigarh. Pehowa is not a major sugar-producing region.
D. Thanesar is a city in Kurukshetra district of Haryana, India. It is located about 100 kilometers from the state capital, Chandigarh. Thanesar is not a major sugar-producing region.