C. Characterization.
"Characterization is a literary device that is used step-by-step in literature to highlight and explain the details about a character in a story. It is in the initial stage in which the writer introduces the character with noticeable emergence. After introducing the character, the writer often talks about his behavior; then, as the story progresses, the thought-processes of the character."
Bradbury has a straightforward writing style that seeks to evoke a sense of wonder through two seemingly opposed concerns: the careful construction of mundane details and a sharp eye for vividly capturing imaginative flights of fancy. Combined, they create Bradbury's signature style, finding wonder in everyday life by using fantastic / unrealistic elements to highlight the vagaries of human nature. Often, this means the stories are built on simply constructed sentences --declarative, often distanced from the subject it describes - with dramatically timed lapses into a more florid, poetic writing style when a character comes to grips with a new experience, such as the rocket flight of "The Rocket".
Need more information to answer because I can’t get the answer without records