The correct answer is Karnal.
Karnal is a district in the Indian state of Haryana. It is located in the northern part of the state, and is bordered by the districts of Kurukshetra, Panipat, Jind, Hisar, and Fatehabad. The district has a population of over 2.5 million people, and its headquarters is the city of Karnal.
Karnal is a major agricultural district, and is known for its production of wheat, rice, and mustard. The district is also home to a number of industries, including textiles, engineering, and pharmaceuticals.
The following are the reasons why Karnal is the correct answer:
- Karnal is the largest producer of mustard in Haryana. In 2019-20, the district produced over 1.5 lakh tonnes of mustard, which was about 30% of the state’s total production.
- Karnal has a favorable climate for the cultivation of mustard. The district receives an average rainfall of about 700 mm, and the soil is well-drained and loamy.
- The farmers in Karnal are well-educated and progressive. They use modern agricultural practices, and are always looking for new ways to improve their yields.
- The government of Haryana has also been providing support to the farmers in Karnal. The government has set up a number of schemes to promote the cultivation of mustard, and has also been providing subsidies on the seeds and fertilizers.
The other options are incorrect because:
- Rohtak is a major industrial district, and is not known for its production of mustard.
- Faridabad is a major urban district, and is not known for its production of mustard.
- Mahendragarh is a hilly district, and is not suitable for the cultivation of mustard.