All of the options provided can effectively illustrate how genre affects the theme of a text, but if you had to choose one that directly addresses the influence of genre on theme presentation, the most comprehensive response would be:
**Genre affects which themes can be presented in the story.**
This is because different genres often have conventions and expectations that guide the types of themes that are explored. For example, a romance novel might focus on themes of love and relationships, while a horror story could delve into themes of fear and survival.