Using one object to symbolize another is known as a metaphor. One of my favorite lines from the poem "Queen of the Cats" describes how the cat's eyes would literally "spark with firelight fantasies" as she gazed into the flames.
Because the cat's imagination is represented by the firelight, this is a metaphor. Poets may employ metaphors to help their readers envision their work in a new manner. Firelight serves as a metaphor in this poem for the cat's eyes, which seem bright and full of imagination.
A because the Hook has to be in the beginning to bring the reader in and make them want to read more. The hook catches or "hooks" the reader's attention when reading. That's why it's called a "hook."
The answer to the given sentence above would be a complex sentence. What makes it complex is that, it contains an independent and a dependent clause. The clauses are connected by a subordinating conjunction which is the word "although". Hope this answers your question.