What is an encapsulated stadium?

An encapsulated stadium is defined as an enclosed venue specifically designed to host large events, including sports games, concerts, and various performances. The key characteristic of an encapsulated stadium is its ability to create a controlled environment for audiences and participants. This enclosure typically features a roof and walls that protect against weather conditions, allowing events to take place year-round without weather-related interruptions.

This design enhances the experience for both attendees and performers, providing amenities like temperature control and sound insulation, which can be essential for high-level competitions and performances. The enclosed nature also means that the venue can be equipped with advanced lighting and sound systems, further improving the event experience.

In contrast, a field for informal play refers to open spaces designated for casual sporting events, without the infrastructure and amenities of an encapsulated stadium. A large outdoor arena, while potentially hosting significant events, lacks the enclosed characteristic that defines encapsulation. Lastly, a sports complex with multiple fields may include various types of outdoor facilities but does not necessarily imply that it is enclosed. Thus, the correct answer emphasizes the unique attributes of encapsulated stadiums in hosting large-scale events.