What made the archeologist feel excited was that he finally

What if an archeologist found three bones in Cairo, Egypt buried 4 meters, 7 meters, and 9 meters apart (to form a triangle)? The likelihood that more bones are in this area is very high. The archeologist wants to dig in an appropriate circle around these bones. If these bones are on the edge of the digging circle, where is the center of the circle? Can you determine how far apart each bone is from the center of the circle? What is this length?

求这几个词的词根词源
archeologist impasse whittle escalate drought intrigue assault conflate precipitation

一道托福模拟题
Archeologists have found sites all over North America that contain similar tools dating from a period about 12,000 years ago.The culture that developed these tools has been named Clovis after the site near Clovis,New Mexico,where the first tools of this sort were discovered in 1932.The tools are quite sophisticated and are unlike any tools that have been found in the Old World.
In the years since the first tools of this sort were discovered in New Mexico,archeologists have discovered Clovis tools in areas ranging from Mexico to Montana in the United States and Nova Scotia in Canada.All of the Clovis finds date from approximately the same period,a fact which suggests that the Clovis spread rapidly throughout the North American continent.
3 From the evidence that has been discovered,archeologists have concluded that the Clovis were a mobile culture.They traveled in groups of 40 to 50 individuals,migrating seasonally and returning to the same hunting camps each year.Their population increased rapidly as they spread out over the continent,and they were quite possibly motivated to develop their sophisticated hunting tools to feed their rapidly expanding populace.
12.According to paragraph 1,the town of Clovis
(A) is in Mexico
(B) was founded in 1932
(C) is where all members of the Clovis culture lived
(D) is where the first remnants of an ancient culture were found
正确答案为D.
“The culture that developed these tools has been named Clovis after the site near Clovis,New Mexico,where the first tools of this sort were discovered in 1932.”这句话不是说工具是在Clovis的near site 发现的吗,而D选项说是在Clovis城里发现的,请问我的理解哪出来问题?