(1) Due care imposes upon the licensee the obligation to perform professional activities with concern for the best interest of those for whom the activities are performed and consistent with the profession's responsibility to the public. It is essential to preserving the public's trust and confidence. Due care requires the licensee to discharge professional responsibilities with reasonable care and diligence and to adequately plan and supervise all professional activities for which the licensee is responsible. A licensee shall act with due care in the performance of all professional activities in whatever capacity performed.