Final answer:
A CNA may refuse a delegated task if it is unsafe or if they are not competent to perform the task, such as not knowing how to use the necessary equipment (option C). Personal dislikes regarding the task or individuals involved are not valid reasons for refusal.
Step-by-step explanation:
An appropriate reason for a Certified Nursing Assistant (CNA) to refuse a delegated task would be if they believe that it is unsafe or if they are not competent to perform the task due to lack of training or knowledge. For example, if the CNA does not know how to use the equipment necessary to perform the task, this could compromise patient safety and would be a valid reason to refuse.
In the given options, the one that fits this rationale is C. The CNA does not know how to use the equipment to perform the task. CNAs are obligated to ensure that they are capable of performing a task with the required competence. If they have not been trained to use certain equipment or feel that they do not possess the necessary skills, they should speak up immediately and refuse the task to maintain the safety and wellbeing of the patient.
Personal preferences, such as not liking a given task or having issues with a particular patient or nurse, do not constitute valid reasons to refuse a task within the professional scope of a CNA's responsibilities. The refusal based on these factors could be seen as unprofessional and may have repercussions. The priority for a CNA should always be the provision of safe and effective patient care.