Which action ensures the validity of a document during a meeting?

Verifying the identity of the signers is crucial for ensuring the validity of a document during a meeting because it establishes a clear connection between the individuals executing the document and their authority to do so. This action helps prevent fraudulent activities, such as unauthorized individuals signing documents or misrepresenting their identity. By confirming that each signer is who they claim to be, the integrity and legitimacy of the document are upheld. This step is especially important in meetings where decisions or agreements are formalized, as it provides evidence that those binding themselves to the contents of the document have the legal and organizational authority to do so.

While gathering signatures, reviewing the document, and making copies are important actions for processing the document, they do not inherently validate the identities of the individuals involved, making them less effective at securing the document's integrity on their own.