Final answer:
Antonia scanned a QR code in the magazine, which led her to information about fast fashion, a concept that involves quickly bringing trendy clothes to market at an affordable price.
Step-by-step explanation:
Antonia scanned a QR code in the magazine that directed her to information about fast fashion. A QR code, or Quick Response code, is a type of barcode that can be scanned using a smartphone camera, leading directly to a website or other digital content. In this case, it provided Antonia with insights into fast fashion, which is a term used to describe clothing designs that move quickly from the catwalk to stores to take advantage of current fashion trends. Fast fashion allows mainstream consumers to purchase trendy clothing at an affordable price, but it also has been associated with various ethical and environmental concerns.