Final answer:
The third option with Ginger asking about attire for a formal dinner best exemplifies normative function, as it is directly related to formal norms and social conformity.
Step-by-step explanation:
The example that best exemplifies the normative function is the third option: Ginger is nervous about her first formal dinner and asks her sister what outfit she should wear to make a good impression for this sophisticated occasion. This scenario directly involves social norms, as Ginger seeks guidance on proper attire to adhere to the expected formal dress code, which is a formal norm in such a social setting. Ginger is essentially trying to understand what behavior is considered good, right, and important in the context of a formal dinner, which ties into the social conformity encouraged by society's norms.