A nurse on a mental health unit is planning a group therapy session about assertiveness training. For which of the following clients should the nurse recommend the training?

A. A client who has new-onset delirium: Clients with delirium experience fluctuating confusion, disorientation, and impaired attention, making them unable to participate meaningfully in structured group therapy such as assertiveness training. B. A client who is experiencing auditory hallucinations: Clients with active hallucinations have difficulty concentrating and reality testing. Participation in assertiveness training would not be effective until the hallucinations are stabilized with treatment. C. A client who is experiencing mania: Manic clients exhibit hyperactivity, distractibility, and pressured speech, making it difficult for them to engage appropriately or benefit from structured learning and behavioral training sessions. D. A client who has somatic symptom disorder: Clients with somatic symptom disorder often have difficulty expressing emotional needs directly and may use physical complaints to gain attention or relieve anxiety. Assertiveness training helps them communicate feelings and needs more effectively, improving coping and interpersonal relationships.