A nurse is planning care for a client who is in the manic phase of bipolar disorder. Which of the following interventions should the nurse include in the client's plan of care?

A. Seclusion should be avoided unless absolutely necessary for safety, as it may increase agitation in a manic client. B. A stimulating environment could worsen mania, leading to increased agitation and impulsivity. C. While maintaining a regular sleep-wake cycle is important, discouraging naps could increase irritability and fatigue, which may worsen manic symptoms. D. Consistent routines help provide structure and security for clients in the manic phase, reducing confusion and promoting stability.