OG详解-OG10 文法 Q12

Choice B is the best answer. The sentence presents the study, describing it as a 2013 analysis of Quanhucun cat bone fragments, and its conclusions, indicating what the analysis suggests about cat domestication in Quanhucun. 
Choice A is incorrect because the sentence focuses on the study’s methodology; it doesn’t present conclusions from the study. Choice C is incorrect. While the sentence provides a general overview of the study, it doesn’t present conclusions from the study. Choice D is incorrect. The sentence describes a finding from the study; it doesn’t present conclusions from the study.