Question ID:PT83 S1 Q21 Passage:Archaeologist: Our team discovered 5,000-year-old copper tools near a Canadian river, in a spot that offered easy access to the raw materials for birchbark canoes‚ birch, cedar, and spruce trees. The tools are of a sort used by the region's Aboriginal people in making birchbark canoes in more recent times. It is likely therefore that Aboriginal people in Canada built birchbark canoes 5,000 years ago. Stem:The archaeologist's argument depends on the assumption that the copper tools that were found Correct Answer Choice:BChoice A:had no trade value 5,000 years ago Choice B:were present in the region 5,000 years ago Choice C:were designed to be used on material from birch, cedar, and spruce trees only Choice D:were the only kind of tool that would have been used for canoe making 5,000 years ago Choice E:are not known to have been used by the region's Aboriginal people for any task other than canoe making