Which of the following actions can a client take regarding attorney-client privilege?

A client can indeed prevent their attorney from disclosing information that falls under the attorney-client privilege. This privilege is established to protect the confidentiality of communications between an attorney and their client, fostering an environment where clients can share sensitive information necessary for legal representation without fear of that information being disclosed. The privilege is designed to promote open and honest dialogue, ensuring that clients can speak freely, thereby allowing attorneys to provide informed and effective advice.

The other options do not accurately reflect the nature of attorney-client privilege. For instance, disclosing privileged communications to the public undermines the very purpose of the privilege, as it is meant to protect confidential exchanges. Sharing information with third parties usually results in a waiver of the privilege unless certain exceptions apply, such as when the third party is part of the legal team (like an expert or investigator). Waiving privilege generally requires the client's consent or action; hence, the client cannot unilaterally decide to waive it without the attorney's agreement, as this could have significant implications for the ongoing representation and legal strategy.