Answer:
HYPERBOLE (Correct answer)
Explanation:
"the flattest, straightest piece of road in God's whole creation" is the figurative language used here.
We have no way of knowing which is the flattest and straightest piece of road god created...or even whether god exists...and roads are built by humans also..which is something to consider...
Hence it becomes a figurative phrase thingy and a hyperbole since the phrase makes it the flattest and straightest god has ever made...