The correct answer is D. All of these.
Kurmali is a dialect of Hindi spoken in Jharkhand, Bihar, West Bengal, and Odisha. It is mainly spoken in Hazaribagh and Ranchi districts of Jharkhand. Munda is a language spoken by the Munda people of India. It is the official language of Jharkhand and is also spoken in other states of India such as Chhattisgarh, Odisha, and West Bengal. Kurukh is a language spoken by the Oraon people of India. It is the official language of Jharkhand and is also spoken in other states of India such as Chhattisgarh, Odisha, and West Bengal.
Kurmali, Munda, and Kurukh are all languages spoken in Jharkhand. They are all official languages of Jharkhand and are also spoken in other states of India. Therefore, all of the statements given above are correct.