Final answer:
The statement that a certified nursing assistant must complete training and pass both parts of the certification exam is true. CNAs are crucial in the healthcare field, aiding nurses and caring for patients.
Step-by-step explanation:
A certified nursing assistant (CNA) is indeed an individual who has successfully completed the requisite training and has passed both the theory and practical components of the certification examination. This statement is True. CNAs are essential members of the healthcare team, providing critical support to nurses and caring for patients by assisting with activities of daily living, taking vital signs, and offering other necessary patient care duties.