The nonfiction texts which will most likely have a formal tone is:
a geography textbook
Explanation:
The language used in a travel guidebook, a biography, and a blog post has an informal tone. These are the texts which are meant for the recreational and informative purpose. They not just give information about things and experiences but also informally treat their reader. On the other hand, a geography textbook will have the information written in a formal way to educate the reader.
This questions requires first thinking of the entire story as well as analyzing the plot and the overall message of the story to determine the conflict and resolution.
