How does Jackson must clearly use a non sequitur about Indian removal in the excerpt?

In “the things they carried”, why is jimmy unsure when martha calls the pebble “a token of her truest feelings”

Why might a reader look for an idea that is restated? to craft a summary of the article to find the subheadings in the article to identify the article's main idea to locate the article's key support

In twelve years a slave, northup realizes he cannot trust anyone after his kidnapping except hamilton and brown god the physician the women who gave him drink