Answer:
It creates a strong, relatable image.
Step-by-step explanation:
Word-choice always plays a vital role in creating the intended tone, mood, and imagery which allows the author to leave the intended impact(feeling) on the readers. The choice of words displays the author's attitude or approach towards a particular subject matter which offers a perspective to the readers to view or feel the text and associate themselves to the idea(being conveyed) and respond accordingly.
In the given paragraph from the passage, the choice of words in the phrase 'when...night' creates a 'very strong and relatable image' through which the readers can visualize and associate themselves to it. It allows the readers to connect to the troubling times in their life(signified by 'inky black night') and elicit the response accordingly.