The Acoma and Hopi are probably the two oldest surviving Pueblo communities, both dating back at least a thousand years.
both of which have dated
and each has dated
and each one dating
each one of which date
A选项：Correct. 本选项在语法和逻辑上均是正确的。both dating back at least a thousand years是独立主格结构。
B选项：定语从句both of which have dated at least a thousand years就近修饰名词the two oldest surviving Pueblo communities，这是不正确的。可以被追溯到1000年以前的显然是Acoma and Hopi（请注意，这里the two oldest surviving Pueblo communities是泛指）。
E选项：each one of which引导的也是定语从句，该错误同选项(B)。