In my previous comment I gave the answer of the third option
A theme is “In contemporary literary studies, a theme is a central topic, subject, or message within a narrative. Themes can be divided into two categories: a work's thematic concept is what readers "think the work is about" and its thematic statement being "what the work says about the subject”
the medicine bag represents his cultural heritage, his father, and his son. 16 At the end of the story, Martin puts the sacred sage, an aromatic plant, in his medicine bag. Why does he do this? It fulfills Grandpa's wish.