The fact that is emphasized by the hyperbole in this excerpt is: "the dedication Walker showed in praying for King" (Option A)
In literature, any statement that is over emphasized or exaggerated beyond what would obtain normally is called a Hyperbole.
An example of a Hyperbole is:
"He opened his mouth wide as the gates of a city."
Thus, it is correct to state that (Option A) exemplifies a hyperbole.
Learn more about Hyperbole at;
https://brainly.com/question/2351925
#SPJ1