Direction: In the following passage, some of the words have been left out. Read the passage carefully and select the correct answer for the given blanks out of the given alternatives.

The thorniest, most fought-over question in Indian history is slowly but surely getting answered: did Indo-European language speakers, who called ___(1)___ Aryans, stream into India sometime around 2,000 BC – 1,500 BC when the Indus Valley civilization came to an end, bringing with them Sanskrit and a ___(2)___ set of cultural practices? Genetic research based on an avalanche of new DNA evidence is making scientists around the world converge on an unambiguous answer: yes, they did. The paper that put all of the recent discoveries together into a tight and ___(3)___ history of migrations into India was published just three months ago in a peer-reviewed journal called ‘BMC Evolutionary Biology. In that paper, titled “A Genetic Chronology for the Indian Subcontinent Points to Heavily biased Dispersals”, 16 scientists led by Prof. Martin P. Richards of the University of Huddersfield, U.K., concluded: “Genetic influx from Central Asia in the Bronze Age was strongly male-driven, consistent with the patriarchal, patrilocal and patrilineal social structure ___(4)___ to the inferred pastoralist early Indo-European society. This was part of a much wider process of Indo-European expansion, with an ultimate source in the Pontic-Caspian region, which carried closely related Y-chromosome lineage across a vast swathe of Eurasia between 5,000 __(5)___ 3,500 years ago”.