Archaeologists in Michigan have excavated a Native American camp near Dumaw Creek. Radiocarbon dating of animal bones found at the site indicates that the camp dates from some time between 1605 and 1755. However, the camp probably dates to no later than 1630, since no European trade goods were found at the site, and European traders were active in the region from the 1620's onward.
Which of the following, if true, most strengthens the argument?
Due to trade among Native Americans, some European trade goods would have reached the area before the European traders themselves did.
At all camps in the region that have been reliably dated to the late 1620's, remains of European trade goods have been found.
The first European trade goods to reach the area would have been considered especially valuable and preserved as much as possible from loss or destruction.
The first European traders in the area followed soon after the first European explorers.
The site is that of a temporary camp that would have been used seasonally for a few years and then abandoned.
因:没有发现贸易商品
客观事实:贸易活动是在1620后开始活跃的
果:camp应该是在1630之前
这里的假设前提就是 可以通过有无发现trade goods 来推断camp的日期
而刚好B项就是在描述 日期已确定为1620的camp的地方 发现了trade goods 这样就刚好加强的本题的推论 即可通过trade goods来推断camp的日期
登录 或 注册 后可以参加讨论