Final answer:
An AP assigned to give a bed bath to a client on contact precautions should use a gown for protection.
Step-by-step explanation:
The RN instructs the AP to use a gown when giving the bed bath to a client who is on contact precautions. Wearing a gown is important in order to protect the AP from any potential contamination or spread of infection. This is a standard protocol followed in healthcare settings to ensure the safety of both patients and healthcare providers.