Explanation
Correct answer: B.
Choice B is the best answer because it presents a statement about Altınışık et al.’s finding that is supported by the text. The text notes that tool similarities across Neolithic settlements could be attributed to imitative behavior or trade. However, Altınışık et al. found evidence of genetic affinity (that is, genetic relatedness) among the populations of these settlements. Genetic relatedness among populations with similar tools raises an alternative possibility: the tool similarities may have emerged through population blending rather than through imitation or trade alone. Thus, the finding raises the possibility that tool design similarities resulted from population blending.
Why the other choices are wrong
Choice A
Choice A is incorrect because the text doesn’t address the timing or direction of migration between settlements. Although lesser genetic affinity with Central Zagros could reflect various historical patterns, the text presents genetic relatedness as evidence of population intermixing, not as evidence about when people or tools arrived at particular locations.
Choice C
Choice C is incorrect because the text doesn’t indicate that tools originated specifically at Çayönü Tepesi or that other settlements imitated its designs. Although the text notes that genetic affinity with Central Zagros was found “to a lesser extent,” this describes degrees of genetic relatedness, not the frequency of tool imitation. Instead, the text presents tool similarities as a shared phenomenon across settlements.
Choice D
Choice D is incorrect because the text doesn’t discuss a lack of cultural similarities among Neolithic peoples in Southwest Asia. Rather, the text focuses solely on tool similarities and genetic affinity without addressing other cultural parallels or differences.