B. Olivia's first solo shopping was bad because she ...

The text describes Olivia's first solo shopping experience as a disaster. She states: "I got completely lost in the large building. I couldn't find the right shop, and when I finally did, I felt too shy to ask for help to find my size. The shop assistant was not very friendly. I left the mall without buying anything and almost cried from frustration on the way home." This matches option 2 perfectly.

Answer: 2. got lost, felt shy, and didn't buy anything.