To revise the paragraph and make the analysis clearer the literary term that could be substituted for the underlined words in the paragraph is "Theme".
Explanation:
The underlined words are idea and portrayal, these words represent the concept or representation of something, similarly, theme represents a general concept without changing the meaning of the sentences or affecting the message that the paragraph tries to convey to the readers, the other options are not correct since they refer to either comparison, unlike situations or specific definition of characters and senses.
Her language changes; she doesn't speak proper English around the other church members because she doesn't want to appear superior or better than them.
