Final answer:
Nathaniel makes the mistake of using the women's restroom instead of the men's restroom.
Step-by-step explanation:
The mistake that Nathaniel makes when he needs to use the restroom is that he uses the women's restroom. This is incorrect because restrooms are typically labeled for either men or women based on gender. Nathaniel should have used the restroom that corresponds to his gender identity.
Using the restroom that aligns with your gender identity is important for maintaining a safe and comfortable environment for everyone. It is essential to respect and adhere to the designated gender-specific restrooms to avoid causing any discomfort or confusion for others.