Which of the following best describes a door spray?

A door spray is typically designed as a decorative arrangement that is placed on or around the front door, especially in the context of funerals. It serves to signify that a funeral is taking place at the home, acting as a visual cue for visitors. The door spray often includes flowers and greenery that convey sympathy and respect, aligning with mourning and remembrance.

In contrast, traditional bouquets are usually meant for various celebratory occasions, and formal arrangements for caskets are specifically designed for funerals but do not serve the purpose of communicating the event at home. Accessories for banquet tables, while important in floral design, do not relate to funeral practices or signify any aspect of mourning. Thus, option C accurately captures the nature and contextual purpose of a door spray in relation to funeral traditions.