Https://www.enotes.com/research-starters/bullying
C) On exhibition has a stronger connotation, meaning that the bread is being shown to make a significant impression.
Context clues from the rest of the excerpt show that the "beautifully white" bread is "unlike what was given." It also says that the kitchen "was very clean" with an exclamation point. These clues show that the owners of the home are trying to make a significant positive impression on the jury.
