Banka is the answer that matches the Bihar-specific fact asked in the question. s associated with Hindu mythology. The key to this question is the precise association expressed in its wording: “Which district is home to the famous Mandar Hill associated with Samudra Manthan legends?” The answer Banka matches that clue directly and is therefore factually appropriate. Option B — Bhagalpur — is incorrect because it does not match the exact person, district, location, institution, river, event or identifying feature required by the question. It may be associated with another Bihar-related context, but that broader association does not satisfy this specific wording. Option C — Munger — is incorrect because it does not match the exact person, district, location, institution, river, event or identifying feature required by the question. Option D — Jamui — is incorrect because it does not match the exact person, district, location, institution, river, event or identifying feature required by the question. Mandar Hill is located in Banka district and is associated with Hindu mythology.