How Do Mental Health Professionals Typically Present the Stage and Task

How do mental health professionals typically present the stage and task models of grief and bereavement to their clients?

A) as a linear progression as the individuals or families move progressively from one stage or task to the next
B) as a literal approach to understanding grief and bereavement with full recovery in the last stage or task
C) a way to understand grief without expectation of their clients and families experiencing all these stages or tasks or occurring in sequence
D) as the best method for their clients and families to cope with grief and loss