Which of these is an example of infrastructure?
A
Lake Michigan, one of the largest lakes in the United States
B
the curtains on the windows of a bedroom
C
the border of Massachusetts and Connecticut
D
The Pacific Coast Highway that runs along the coast of California

D. The Pacific Coast Highway that runs along the coast of California

Explanation:

According to the text, “The roads, highways, power supplies and buildings that help a society run are called infrastructure.” The Pacific Coast Highway is therefore an example of infrastructure.

they use tree rings to figure out weather patters.