Which of the following statements best reflects the core principle of humanistic theory that a psychiatric nurse should uphold to facilitate therapeutic growth in a client?

Rationale: A. Humanistic theory, particularly associated with Carl Rogers, emphasizes the importance of unconditional positive regard, empathy, and genuineness in helping clients grow and achieve self-actualization. The nurse’s role is to create a safe, accepting environment that supports the client's personal development. B. This aligns more with behavioral or cognitive-behavioral therapy, not humanistic theory. C. Interpreting unconscious conflicts is a feature of psychoanalytic theory, not humanistic theory. D. Using reinforcement to shape behavior is central to behavioral therapy, not humanistic approaches.