Final answer:
The excerpts do not narratively align with Santiago following a friend into the marketplace but instead include various unrelated market scenes and events.
Step-by-step explanation:
The details provided in the excerpts do not mention a specific event where Santiago follows a friend into the marketplace. Instead, they offer snippets of various scenes and characters related to different stories, all of which involve a market or marketplace in some way. The references to Santiago quitting the academy and returning to Puerto Rico, as well as scenes from a market depicting social life, suggest the diverse uses of a market as a literary backdrop, symbol, or plot point, rather than a linear narrative involving Santiago following a friend into a marketplace.