I think a motif can evolve into a theme as it accumulates greater importance throughout a piece of writing. A theme generally summarizes the central topic of a literary work, meaning that a motif, if further explored, could imply a theme in the narrative.
Answer: They drive the narrative of the tale.
These conflicts occur between two individuals within the story.
They arise when a character is in conflict with societal norms.
The last choice is accurate. While the passage provides a specific instance, its primary message conveys that our bodily systems are interconnected; hence, laughter, being a manifestation of joy, can alleviate stress and enhance our immune response.
I tend to favor option (A) because the husband addresses his wife in a childlike manner rather than as an adult, which seems to convey a patronizing attitude. However, one could also make a case for (F).