Did you see the movie The Lord of the Rings? Most people know that it's based on J.R.R. Tolkien's book. But few realize, that by day, Tolkien was a professor of ancient languages. He led a very normal life as a college professor, preparing lectures and grading papers. He loved to write. However, and in his spare time at night, he escaped to a world of hobbits, elves and other creatures. In 1937, he published The Hobbit. Then, he wrote the three novels that are known together as The Lord of the Rings. It took him twelve years. Have you ever seen the three books in one volume? If so, you know how much work Tolkien put into creating his fantasy world. Actually, it's surprising that it took him only twelve years.
I believe that it is a metaphor because metaphors compare things without using the words like or as.
I am pretty sure that the correct answer on the question which is being asked is the first option from the scale. It helps you figure out what you already know and what you need to research about your topic. The word 'idea' in question helps you to understand that you don't need to take <span>extensive list of approaches or organizer of ideas as a basis.</span>
