The metaphor in this sentence likens the exchange of ideas (and specifically the arrival of new, radical ideas) as a battle.
The "radical thought" coming from the northeast is defended, not by believers or by thinkers, but by "shots" from newspapers and is "reinforced by regiments." This metaphor makes the arrival of new ideas a dangerous, violent -- possibly even bloody -- situation.
I have a question myself what do you want the answer to?
Answer:
B. It’s pages were brittle and felt like they could crumble at the slightest disturbance.
Explanation:
A. is not the right answer. This part uses the sense of hearing to describe the scene.
<u> B. Is the correct answer. </u>This sentence uses the sense of touch to paint the image. We know this b<u>ecause the author describes the feeling of the pages under the fingers</u>, writing: "they felt like they could crumble“. This is <u>something he could only feel by touch.</u>
C. Is not the correct answer. This part describes the odor, which means it is based on the sense of smell.
D. is incorrect. In this sentence, the author writes: "drew his eyes away“ which means he was describing the sense of sight.