Final answer:
In a healthcare setting, if a nurse is asked to perform a task for which they feel unprepared, their legal responsibility is to inform the healthcare provider or physician that they are unprepared.
Step-by-step explanation:
In a healthcare setting, if a nurse is asked to perform a task for which they feel unprepared, their legal responsibility is to inform the healthcare provider or physician that they are unprepared (choice A).
They should not ignore the request or seek guidance from colleagues without informing the requester (choices B and D). If a nurse feels unprepared, it is important to communicate this to the appropriate authority figure to ensure patient safety and quality of care.