A nurse at a mental health clinic is caring for an adolescent client who has posttraumatic stress disorder following a violent episode with a stranger. Which of the following actions should the nurse take?

Encourage the client to use guided imagery to decrease anxiety.

Direct the client to use regression to cope with the stress caused by flashbacks.

Ask the client's guardians to go to another room during counseling sessions.

Instruct the client to avoid expressions of anger and fear related to the episode.