What gives the author's writing about the civil war authenticity?
a. bierce lived during the civil war time period.
b. bierce actually fought as a soldier during the civil war.
c. most of bierce's other writing is set during the civil war time period.
d. bierce studied the civil war closely so that his writing would be accurate.

ill need more info in order to answer yer ?

and your question what topic are you in trouble with?

the sentence that best describes the tone of the passage from the radio broadcast compared to the passage from the book is b. the radio broadcast has a more surprised tone.

consider the text evidence: in the passage from the book, the description is more matter-of-fact. it is simply describing the things resembling little grey snakes, but there is no urgency in the description. on the other hand, in the passage from the radio broadcast, there is definetely urgency (you can tell from the expression used, "good heavens", which clearly indicates surprise.)