Answer:
B. to distract readers from a weak argument by turning them away from the original topic.
Step-by-step explanation:
Red herring is a component that appears in a context to mislead or distract the concentration of the audiences. The authors use this component to create a distraction about the main idea in thrillers or mysterious fictional stories.
A red herring allows the author to create a different character which has less significance. This character helps in distracting the audience from the main plot, thereby creating an interesting twist and fantastic climax to the story.