What does the term "encapsulated" refer to in the context of sport facilities?

In the context of sport facilities, the term "encapsulated" refers to indoor facilities that are designed to create controlled environments for various sports and activities. These encapsulated spaces are typically enclosed structures that protect against external weather conditions such as rain, wind, and extreme temperatures, allowing athletes and participants to train or compete year-round in a stable setting.

By being encapsulated, these facilities often maintain optimal playing conditions, which can include regulated temperature, humidity, and lighting. This controlled environment is crucial for sports that require consistent conditions to ensure safety and performance, making these venues versatile for multiple sports and events.

The other options describe different types of sports facilities but do not embody the concept of encapsulation which specifically relates to the enclosed, climate-controlled nature of indoor facilities.