The correct answer is A. Sirsa.
Sirsa is a district in the Indian state of Haryana. It is located in the southern part of the state and is the headquarters of the Sirsa district. The district has a population of over 1.5 million people and is one of the most populous districts in Haryana.
Sirsa is a hot and dry district with an average temperature of 27 degrees Celsius. The hottest month is May, when the temperature can reach up to 45 degrees Celsius. The district receives very little rainfall, with an average annual rainfall of just 500 mm.
The main occupation of the people of Sirsa is agriculture. The main crops grown in the district are wheat, rice, cotton, and sugarcane. The district is also home to a number of industries, including textiles, sugar mills, and engineering industries.
Sirsa is a well-connected district with good road and rail connectivity. The district is also home to a number of educational institutions, including the Chaudhary Charan Singh Haryana Agricultural University and the Maharshi Dayanand University.
The other options are incorrect because they are not as hot as Sirsa. Hisar has an average temperature of 26 degrees Celsius, Sonipat has an average temperature of 25 degrees Celsius, and Jind has an average temperature of 24 degrees Celsius.