Final answer:
The nurse's primary focus in caring for a client dying of lung cancer is on addressing psychosocial needs, including emotional, spiritual, physiological, and social dimensions.
Step-by-step explanation:
When providing care to a client who is dying of lung cancer, the primary focus for the nurse would be on the dimension of psychosocial needs, which encompass the emotional, spiritual, physiological, and social aspects of care. Hospice care is a model that emphasizes comfort and quality of life, where nurses help individuals and their families navigate through the complex emotions and decisions associated with end-of-life care. The nurse supports the patient's emotional well-being, addresses spiritual concerns, manages physiological symptoms, and enhances social support networks to ensure comprehensive care.