Final answer:
Adam's discovery of Zach's hidden talent is context-dependent and could relate to various skills or abilities, impacting the story's plot or character dynamics.
Step-by-step explanation:
Without specific context regarding the characters Adam and Zach, it's challenging to pinpoint exactly what hidden talent Adam discovered about Zach. In literature and English classes, a discovery about a character's hidden talent could be an important plot point or character development moment. For example, if the characters were part of a story, Adam may have discovered Zach's talent in anything from sports to a specific art form like painting or playing a musical instrument. These discoveries can play a pivotal role in the narrative by impacting the relationship between the characters, contributing to the resolution of a conflict, or enabling a key event in the story.