The correct answer is: D. Kashmiri
The Constitution of Jammu and Kashmir (26th Amendment) Act, 1999, declared Kashmiri as the official language of the state of Jammu and Kashmir. The act also provided for the development and promotion of the Kashmiri language.
Balti is a language spoken in Baltistan, a region in the Gilgit-Baltistan region of Pakistan. It is a member of the Dardic branch of the Indo-Aryan language family.
Dogri is a language spoken in the Jammu region of India. It is a member of the Indo-Aryan language family.
Gojri is a language spoken in the Jammu region of India. It is a member of the Indo-Aryan language family.
Kashmiri is a language spoken in the Kashmir Valley, a region in the Indian state of Jammu and Kashmir. It is a member of the Dardic branch of the Indo-Aryan language family.