Use reasoning to lead to the answer of the following question:
While in Southern California they donned their mouse ears for the day, they bought some balloons from a vendor while they were where?
Options:
- mouse trap
- sky
- disneyland
- filled with air
- fairgrounds
 Reasoning process:
Disneyland is a theme park with various kind of stores. Stores are places where vendors sell items like balloons. Therefore, the final answer is disneyland.