What describes the term 'deceased'?

The term 'deceased' specifically refers to a dead human body. This definition indicates that the individual in question has passed away, distinguishing them from living persons and any associated concepts related to grief or funeral arrangements.

The other options do not accurately capture the essence of what 'deceased' is. For instance, a living person attending a funeral clearly represents someone who is alive and involved in the rituals of mourning rather than describing the state of having died. Similarly, while funeral arrangements pertain to the preparation and planning around the deceased, they do not define the term itself. Lastly, describing a psychological state for grieving individuals relates to the emotional response to death rather than the term 'deceased' itself. Consequently, the correct understanding of 'deceased' is firmly tied to the condition of being dead, making the description of a dead human body the appropriate choice.