Final answer:
When a CNA is unsure how to do something, they should communicate with the nurse and ask for help (option B). This ensures tasks are performed correctly and in line with protocols and procedures.
Step-by-step explanation:
When a Certified Nursing Assistant (CNA) is asked to do something they don't know how to do, it is important for them to handle the situation professionally and responsibly. The best course of action for the CNA in this situation is B. Tell the nurse he or she is uncertain and ask for help.
This allows the CNA to acknowledge their uncertainty and seek guidance from someone with more knowledge and experience. By asking for help, they can ensure that the task is performed correctly and in line with the established protocols and procedures.
It is crucial for CNAs to understand that safety and the well-being of the patients are paramount, and it is better to seek assistance than to risk making mistakes that could harm the patients.