Final answer:
Bathing and grooming are considered Activities of Daily Living (ADLs) and should be included in the training of newly hired assistive personnel (AP) who assist clients with these needs.
Step-by-step explanation:
The activity that the nurse should include as an ADL (Activity of Daily Living) when teaching a newly hired assistive personnel (AP) about working with clients who need assistance is C. Bathing and grooming. ADLs are the tasks required for personal care and are fundamental to caring for oneself. They include activities such as bathing, dressing, grooming, toileting, eating, and transferring. On the other hand, tasks such as monitoring vital signs, administering medications, and performing wound care are generally more technical and may fall under the scope of a licensed nurse or may require direct supervision of a registered nurse. Assistive personnel may be involved in some of these tasks, like taking vital signs, under supervision and depending on their level of training and the specific policies of the healthcare facility.