Which of the following statements is true regarding the structure of a deck?

A deck can indeed be a free-standing feature, which makes the statement that it can exist independently of the house not only true but also reflective of the variety of design choices available in outdoor living spaces. Free-standing decks are constructed without being directly attached to a house and can be built in various configurations, making them versatile options for homeowners. This design can provide added flexibility in yard use and can be placed anywhere on the property, allowing for creativity in landscaping and functionality.

In contrast, decks can also be attached to the house or supported by other structures, and while many are elevated, there are also ground-level decks that do not fit the definition of being on the second floor. The statement about a deck always being on the second floor is therefore not universally applicable, as many decks are designed on the ground level to serve different purposes. Understanding the various types of deck construction helps in recognizing the diverse applications and structural considerations involved in deck design.