Supporting Details in Narratives

In the following excerpt from a fictional narrative, the protagonist describes a rainy day in the city:

The rain pattered softly against the window as she sipped her warm cup of tea. Outside, people rushed by under their umbrellas, while cars splashed through puddles, creating a symphony of sounds. The gray sky loomed overhead, yet she felt a sense of peace inside her cozy apartment.

According to this passage, which of the following details best supports the protagonist's feeling of peace?