The "halo effect" refers to the cognitive bias where our overall impression of a person, company, brand, or product influences how we feel and think about their character or properties. In this context, the correct answer would be:
A. assumptions based on limited information
This is because the halo effect leads to the tendency to make broad assumptions about someone based solely on a limited set of characteristics, such as physical attractiveness or overall likability, which can impact our judgment in various areas.