This is an ident. An ident indicates where the start of a new paragraph is. As you can see, the first word is more to the right than the second sentence.
The best answer to the question that is being stated above would be the sentence that is numbered one (1): 'When it comes to fiction, there are many genres'. The next sentences are only subtopics and only support the main idea that are lots of genres for fiction.
Hello
I believe it is a compound sentence
