Final answer:
The passages provided for analysis deal with character dynamics and social relationships in literature, a common subject in high school English coursework.
Step-by-step explanation:
The excerpts provided appear to be from pieces of literature featuring character interactions and relationships. For example, the mention of Troy Bolton implies a scenario where high school social dynamics are at play, where individuals within different social circles or cliques navigate their interactions in settings such as the cafeteria. Furthermore, the discussions between characters such as Marcus Schouler and Trina, and the change in Marcus's behavior towards McTeague hint at themes of friendship and changing relationships in literature - a common subject of study in English classes at the high school level. The excerpts demonstrate elements of character development, narrative, and social commentary, all of which are crucial components of literary analysis in English courses.