Why: This question appears in Meghalaya PSC examination materials focusing on Khasi Hills history. The question specifically asks about ancient kingdoms with megalithic traditions in the Khasi Hills region of Meghalaya. However, the search results do not provide the complete question with answer options or the definitive answer. To properly answer this question, one would need to research the pre-colonial history of Khasi Hills and identify which ancient kingdom is known for megalithic traditions in this region. Historical records indicate various kingdoms ruled this area, but the specific answer requires access to complete examination materials.

Why: Statement I is incorrect because the Khasi society follows a matrilineal system, not patrilineal. In the Khasi matrilineal system, inheritance and family lineage pass through the mother, not the father. Children take the mother's surname, the husband moves into the wife's house, and the youngest daughter (khatduh) inherits the ancestral property.[3][7] Statement II is correct because the Khasi people are officially recognized as a Scheduled Tribe under the Constitution of India, and they enjoy tax benefits, reservation in education and jobs, and the right to follow their customary practices.[3][7] Statement III is correct because the Khasi Hills Autonomous District Council plays a vital role in preserving and governing traditional Khasi laws and protecting their customary traditions.[3] Therefore, only Statements II and III are correct, making the answer B.

Why: Statement 1 is incorrect because the Khasi people are an ethnic group primarily living in Meghalaya in northeastern India, with significant populations in bordering areas of Assam and certain parts of Bangladesh, not mainly in Sikkim.[7] Statement 2 is correct as the Khasi have been granted the status of Scheduled Tribe under the Constitution of India.[7] Statement 3 is correct because the Khasi practice a matrilineal system of inheritance where lineage and descent are traced through the mother's clan. In this system, children take the mother's surname, the husband moves into the wife's house, and the youngest daughter (khatduh) receives the full share of ancestral or clan property.[7] Therefore, statements 2 and 3 are correct, making the answer C.

Why: Rudra Singha was the Ahom king who invaded and annexed the Jaintia Kingdom. He invaded the Jaintia Kingdom with 43,000 troops and annexed its territories to the Ahom Kingdom during the early 18th century. He also captured the Jaintia king and extended Ahom dominion over Jaintia and Dimasa regions. Therefore, the correct answer is B (Rudra Singha).

Why: The British East India Company annexed the Jaintia Kingdom in 1835 to facilitate their trade on chunam (limestone) and rattan (cane) in Sylhet. Prior to this annexation, the Jaintia Kingdom had been a protected state, but from 1830 onwards, the relationship between Jaintia and the British became strained. Therefore, the correct answer is C (1835).