All of the responses provided highlight valid ways in which genre can affect the theme of a text. However, if you need to select one response that encapsulates the essence of how genre influences thematic presentation, the following option is particularly significant:
Genre affects which themes can be presented in the story.
This statement captures the idea that certain genres tend to focus on particular themes, shaping the overall narrative and its messages. For instance, a romance novel may prioritize themes of love and relationships, while a science fiction story might explore themes related to technology and humanity's future.