The correct answer is: B. 1960
Reasi district was formed in 1960, after being carved out of the erstwhile Udhampur district. It is one of the 20 districts of the Indian state of Jammu and Kashmir. The district is located in the Jammu region of the state, and its headquarters is the town of Reasi. The district has a population of over 400,000 people, and its main languages are Dogri, Hindi, and Punjabi. The district is home to a number of historical and religious sites, including the Reasi Fort, the Raghunath Temple, and the Mata Vaishno Devi Temple.
Option A is incorrect because Reasi district was not formed in 1947. The year 1947 is the year that India gained independence from British rule.
Option C is incorrect because Reasi district was not formed in 2000. The year 2000 is the year that the Indian state of Jharkhand was formed.
Option D is incorrect because Reasi district was not formed in 2007. The year 2007 is the year that the Indian state of Uttarakhand was formed.