Answer:
The genre that best fits a book of fairy tales is fantasy fiction.
Step-by-step explanation:
Fairy tales typically involve magical and supernatural elements, such as talking animals, witches, and enchanted objects, and often take place in fictional or imaginary settings. They are designed to entertain, inspire, and instruct readers, and often convey moral lessons and cultural values. Even though some fairy tales may be based on historical events or cultural traditions, they are usually not considered historical fiction since the primary focus is on the fantastic and imaginative elements rather than on historical accuracy. Therefore, the fantasy fiction genre is the most appropriate classification for a book of fairy tales.