Those studying the possible existence of a whole “Chaco System” believe communities near Chaco
A. are more challenging to study than the archaeological sites in Chaco Canyon.
B. are less culturally significant than the central region of Chaco Canyon.
C. were built up as a drought slowed activities in Chaco Canyon.
D. were established before the great buildings in Chaco Canyon were constructed.
The correct answer is C. were built up as a drought slowed activities in Chaco Canyon.
Explanation: Researchers studying the Chaco System suggest that communities surrounding Chaco Canyon may have developed or increased in importance as a response to environmental changes, such as droughts, which affected the central region. This indicates that these nearby communities played a significant role in the socio-political dynamics of the area during challenging times.