Final answer:
The attorney believes the hospital may lose the case due to the principle of respondeat superior, which means the hospital could be liable for the actions of its employees when those actions are part of their job duties.
Step-by-step explanation:
The attorney's rationale for suggesting that the hospital may lose the case because of the principle of respondeat superior is that this legal doctrine holds that an employer is liable for the actions of its employees when they are acting within the scope of their employment. Therefore, the hospital could be held responsible for the errors made by the nursing assistant, who was performing their job duties. This principle does not necessarily remove accountability from the individual who delegated the task, but in a legal sense, the hospital as the employer may be held liable for the actions of its employees, as stated in the principle of respondeat superior, which fits the second option provided.