8 Read this sentence from Paragraph 2 of the passage.
Congressional legislation passed between 1916 and 1925 enabled construction of a national
highway system of which Route 66 would become the primary east-west artery,
What does the metaphorical use of artery MOST LIKELY suggest?
A
a structure of roads resembling an aspect of human activity
B. O a convenient arrangement for conducting the flow of traffic
c. a vital method for transporting goods and services
D.
a natural connection linking separate locations