The best explanation for the given text is:
There is the narration about the twentieth century which was a century about books and how a book in particular saved earth from an attack.
Based on the complete text, we can see that there is the narration about science fiction and fantasy where a rhyme book saved the world.
We can see that there are fantastic tales about how the book was an effective defense against the attack from Mars.
This shows that the twentieth-century was an era of books and one of those books was a good defense against alien invasion.
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https://brainly.com/question/8513862
