Final answer:
The correct summary of Samuel Johnson's passage is that readers engage more with realistic fiction as it is more applicable to real-life situations, making option 'a' the best choice.
Step-by-step explanation:
The student is asked to choose the option that best summarizes Samuel Johnson's perspective on the impact of realistic fiction on readers. The passage suggests that readers become more engaged and reflective when a story is realistic and reflects their own world, as opposed to fantastical tales that are less relatable. Modern readers find it easier to apply the scenarios and lessons from realistic fiction to their own lives than those from older, more fantastical romances. Johnson's assertion is that this engagements lends a form of practical education to the readers, as they can take cues from the characters' behaviors and the outcomes of their actions in comparable real-life situations.
Therefore, the correct option that best summarizes Samuel Johnson's passage is that young readers only take life advice, or see applications to themselves, from works of fiction that are realistic, rather than from far-fetched fantasy stories. This makes option 'a' the most fitting choice since it aligns with the idea that portrayals reflecting the real world hold more relevance and significance to younger readers.