Ashoka is the answer that matches the Bihar-specific fact asked in the question. It is approximately The wording of the question specifically requires the association represented by Ashoka. Option A (Chandragupta Maurya) is incorrect because it does not match the specific person, district, place, institution, event or factual association asked in the question. Option B (Bindusara) is incorrect because it does not match the specific person, district, place, institution, event or factual association asked in the question. Option D (Brihadratha) is incorrect because it does not match the specific person, district, place, institution, event or factual association asked in the question. Thus the correct option is supported by the relevant Bihar-related historical, geographical, cultural or administrative context, whereas every distractor fails the exact person–place–event relationship. Lauriya Nandangarh in West Champaran district of Bihar is famous for an Ashokan pillar with inscriptions. Emperor Ashoka, the third Mauryan emperor, erected stone pillars throughout his empire bearing his edicts (dhamma inscriptions). The pillar at Lauriya Nandangarh is one of the best-preserved Ashokan pillars and still stands in its original location. It is approximately In ‘Which Mauryan emperor's rock edicts and inscriptions have been found at Lauriya Nandangarh in Bihar?’, the decisive clue is the exact place, institution, event, physical feature or administrative category mentioned in the stem. Bihar GK questions frequently place neighbouring districts, rivers, historical centres, personalities or government institutions together as distractors, so recognition of a familiar name alone is insufficient. The alternatives Chandragupta Maurya, Bindusara, Brihadratha may be valid Bihar-related terms, but they do not satisfy the complete relationship asked here. A sound method is to identify the subject area first—geography, history, polity, economy or culture—and then verify the location, period and function separately.
