A is the answer to this question. Hope it helps
Answer: It allows the reader to understand the lingering terror of the journey.
Explanation:
The description of the train's sound in the book titled "Night" by Elie Wiesel was to show what happens before death after there have been a lot of suffering. He used the sound of the train in order to show that there is still one final stage of pain to go through. This is justified by the expressions where it was stated that "a train rattles along Germany and that the train was filled with a moaning sound"
This give a graphic description of the sorrow and the pain that they the people had to go through. Therefore, Wiesel's unique point of view about the sound of a train whistle impacts the reader as it allows the reader to understand the lingering terror of the journey.
