Which type of arrangement typically includes flowers that do not extend significantly above the confines of the display?

The type of arrangement that typically includes flowers that do not extend significantly above the confines of the display is a casket cover. This arrangement is designed to lay flat on the casket during a funeral service and usually consists of a variety of flowers, greenery, and sometimes other decorative elements. The purpose of a casket cover is to provide a beautiful and respectful tribute without obstruction since it is meant to fit the dimensions of the casket closely, ensuring a neat appearance.

On the other hand, options like a funeral bouquet and a standing spray usually have more height and can extend above their confines. A funeral bouquet is typically designed to be presented or held rather than placed flat, allowing for a more upright arrangement. A standing spray, which is often used as a tribute at memorial services, also stands vertical and is characterized by taller flower arrangements. A sympathy basket, while often low-profile, is intended to convey a sense of warmth and comfort, which can result in a varied design that does not strictly conform to being flat. Hence, the casket cover is the best representative of an arrangement that stays within defined limits in terms of height and structure.