Explanation:

This is a factual question about the geographical location of a specific and prominent research institute in India. - **Option (A) Sarnath, Varanasi:** Sarnath is an historically and archaeologically significant site near Varanasi, famous for its Buddhist monuments and ancient ruins. It does not house the Indian Veterinary Research Institute (IVRI). Therefore, this option is incorrect. - **Option (B) Ghaziabad:** Ghaziabad is a major industrial city in Uttar Pradesh, forming part of the National Capital Region (NCR). While it is home to various educational and research institutions, the IVRI is not located there. Thus, this option is incorrect. - **Option (C) Kanpur:** Kanpur is a significant industrial and educational hub in Uttar Pradesh, hosting prestigious institutions such as IIT Kanpur and Kanpur University. However, the Indian Veterinary Research Institute is not situated in Kanpur. Therefore, this option is incorrect. - **Option (D) Ijjat Nagar, Bareilly:** This is the correct answer. The Indian Veterinary Research Institute (IVRI) is a premier and internationally recognized research institution dedicated to veterinary medicine and animal sciences in India. It is indeed located in Ijjat Nagar, which is a specific locality within the city of Bareilly, Uttar Pradesh. The institute plays a crucial role in veterinary education, research, and extension activities.\nHence, the Indian Veterinary Research Institute is definitively situated in Ijjat Nagar, Bareilly.