Final answer:
The nurse should initiate a referral to PACE for the client who requires assistance with activities of daily living and medical care, as PACE provides comprehensive care for seniors in the community.
Step-by-step explanation:
The Program of All-Inclusive Care for the Elderly (PACE) is designed to provide care for older adults who require assistance with activities of daily living and who may benefit from a comprehensive array of healthcare services, including medical care, in a community setting. Therefore, the nurse should initiate a referral to PACE for a client who requires assistance with activities of daily living and medical care. This is consistent with the PACE program's goal of enabling seniors to live in their community as long as possible while receiving the necessary medical and supportive services.