To maintain client confidentiality when a family member inquires about a client's condition, the nurse should:

Encouraging the family member to contact the client directly for information is the most appropriate action to maintain client confidentiality. This approach respects the client's right to privacy and ensures that any health information is shared with their consent. By prompting the family member to communicate directly with the client, the nurse upholds the ethical standards of confidentiality and autonomy. Clients have the right to control access to their personal health information, and facilitating direct communication allows them to decide whom they wish to inform about their condition.

In contrast, providing details about the client’s health would violate confidentiality and potentially breach privacy regulations such as HIPAA. Additionally, while suggesting that the family member speak to the doctor or informing them of hospital policy can be part of the conversation, these approaches do not empower the client or protect their privacy as effectively as directing the family member to the client. Overall, emphasizing direct communication with the client preserves their confidentiality and promotes a respectful exchange of information.