Final answer:
To better reveal Marvin's character, adding his internal thoughts in response to the crash would provide deeper insight into his personality and character development. The correct option is D. Add information that reveals Marvin’s thoughts as he hears the glass break.
Step-by-step explanation:
To revise the section and reveal more about the character Marvin, the author could choose option add information that reveals Marvin's thoughts as he hears the glass break. By incorporating Marvin's internal monologue or thoughts in reaction to the sound of shattering glass, the writer provides insight into his personality, fears, and perspectives.
This would allow the reader to understand how Marvin processes events and interacts with his environment, offering a deeper character development without the need for excessive description or dialogue.