What plot device does Alvarez use in this opening excerpt from "Antojos," when she puts the reader directly into the action of the story?

For the first time since Yolanda had reached the hills, there was a shoulder on the left side of the narrow road. She pulled the car over out of a sense of homecoming: Every other visit she had stayed with her family in the capital.
O a flashback
O b in medias res
O c chronological order
O d foreshadowing