Here's the evaluation of each statement regarding whether it describes a work of historical fiction:
-
An author writes about a real-life scientist and how he discovered penicillin by accident in the 1920s.
Answer: Yes -
An author writes about two fictional brothers who go to California during the Gold Rush in the 1800s.
Answer: Yes -
An author writes about a scientist who invents a time travel device and goes to prehistoric times.
Answer: No -
An author writes about two sisters who work together to create a brand-new social media platform.
Answer: No
Let me know if you need any further assistance!