From the passage from "The Quinceanera", the phrase that most helps create the mood is the phrase “stroller-driving moms and crying babies.” This phrase helps create the irritated mood.
In literature, mood is a literary resource used to cause certain feelings or vibes in readers through words and descriptions. It creates an emotional setting that surrounds the readers.
In this passage, the narrator is conveying irritation and annoyance because of because of the crowd in the jewelry store and the crying babies.