Best way to approach a position paper?

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

Which of the following elements is an essential aspect of realist literature? a. the text should be based on fictional characters. ob. the text should have a short plot and minimum number of characters. c.the text should be a depiction of everyday life and the struggles surrounding it. od. the text should have a protagonist who possesses heroic qualities. e.the text should depict the high-quality life of a character.

Aprimary source: a- may be biased b- is never biased c- cannot possibly have bias d- none of the above