Which of these storylines can be categorized as science fiction? 1) A man tries to trace his birth parents and learn more about his family. 2) A narrator describes her experiences traveling to a distant planet. 3) A passenger recounts his voyage on board the titanic and how he survived its sinking. 4) A woman invents a machine that allows her to pass through solid objects
Science fiction is fiction based on imagined future scientific or technological advances and major social or environmental changes, frequently portraying space or time travel and life on other planets.