Final answer:
The priority intervention for the nurse to enhance meeting the psychosocial needs of a client on transmission-based precautions is providing emotional support and being present.
Step-by-step explanation:
The priority intervention for the nurse to enhance meeting the psychosocial needs of a client on transmission-based precautions is providing emotional support and being present. When a client is isolated and on transmission-based precautions, they may experience feelings of loneliness, fear, and anxiety. The nurse can support the client by actively listening, providing reassurance, and offering empathy. This can help alleviate their psychosocial needs and promote a sense of well-being.