Final answer:
Passed appetizers would be the best choice for Elizabeth's event at her house for people to mingle and walk around.
Step-by-step explanation:
For Elizabeth's event at her house for the holidays, the best option for people to mingle and walk around would be passed appetizers. Passed appetizers are small bites of food that are served by waitstaff, allowing people to easily move around and engage in conversation while enjoying the food.
Learn more about Options for food at an event for people to mingle and walk around