Dainik Jagran is a widely circulated newspaper in Bihar published in the language of:

Hindi
Bhojpuri
Maithili
English

Dainik Jagran is a widely circulated Hindi-language newspaper in India. It is the largest-selling newspaper in India, with a daily circulation of over 2.5 million copies. The newspaper was founded in 1942 by Babu Jugal Kishore Shukla. It is headquartered in Kanpur, Uttar Pradesh. Dainik Jagran has editions in 13 states and 3 union territories of India. It also has an English-language edition, Dainik Jagran English.

Bhojpuri is a language spoken in the Indian states of Bihar, Jharkhand, Uttar Pradesh, Madhya Pradesh, Chhattisgarh, and West Bengal. It is also spoken in the Terai region of Nepal. Bhojpuri is a member of the Indo-Aryan language family. It is closely related to Hindi and Urdu.

Maithili is a language spoken in the Indian states of Bihar, Jharkhand, and Uttar Pradesh. It is also spoken in the Terai region of Nepal. Maithili is a member of the Indo-Aryan language family. It is closely related to Hindi and Urdu.

English is a West Germanic language that was first spoken in early medieval England and is now a global lingua franca. Named after the Angles, one of the Germanic tribes that migrated to England, it ultimately derives its name from the Anglia peninsula in the Baltic Sea. It is closely related to the Frisian languages, but its vocabulary has been significantly influenced by other Germanic languages, particularly Norse (a North Germanic language), as well as by Latin and French.

Therefore, the correct answer to the question “Dainik Jagran is a widely circulated newspaper in Bihar published in the language of: Hindi / Bhojpuri / Maithili / English” is Hindi.