Final answer:
A novel beginning at a crime scene is most likely a detective story, as this genre often includes a crime, a criminal, and an investigator following a predictable framework, which is distinct from genres like comedy, children's books, or romance.
Step-by-step explanation:
A novel that begins at a crime scene investigation is most likely to be a detective story. This genre is characterized by a set of elements, which typically include a crime that has been committed, a criminal, and a detective or some individual who is responsible for solving the mystery. The structure of a detective story includes these necessary components and follows a predictable framework, leading the reader through the investigation, often including rising action as the detective encounters conflicts and clues.
The opening scene at a crime scene sets up reader expectations for a mystery to be unraveled, making the detective story the most logical of the provided options. Comedy, children's book, and romance genres usually do not start with a crime scene, as each of these has distinct thematic elements and tones that differ from the mystery and tension associated with detective fiction.