Final answer:
A writer must always think about the needs of their characters and the conventions of the genre before beginning to create any kind of fictional setting.
Step-by-step explanation:
Before beginning to create any kind of fictional setting, a writer must always think about the needs of their characters. The setting should be a reflection of the characters' actions, motivations, and experiences. It should also be consistent with the conventions of the genre the work will fall under. By considering the needs of the characters and the genre conventions, the writer can create a setting that resonates with readers and enhances the overall narrative.