Which of the following places is famous for its wildlife in Bihar?

Explanation

At the time of the question, Jharkhand was not a part of Bihar. Therefore, as per the options, Bodh Gaya is the correct answer because Gautam Buddha Wildlife Sanctuary extends into Gaya (Bihar) and also into Koderma and Chatra (Jharkhand), whereas Hazaribagh Wildlife Sanctuary extends in Hazaribagh district of Jharkhand. Since Bodh Gaya is a part of Gaya district (Bihar), the correct option is (b).