Which of the following accurately defines mourning?

A) It describes customary methods of expressing grief.
B) It refers to the inability to bounce back after bereavement.
C) It focuses on the acceptance of one's mortality.
D) It refers to the denial of a loss of a loved one.

Mourning is the process or period of time during which a person expresses grief, often influenced by cultural or religious customs. It involves rituals and practices that are socially prescribed for coping with death, distinguishing it from the internal, personal experience of grief.