Which action signifies approval of a document?

A signature signifies approval of a document because it is an individual's formal consent to the contents of that document. When a person signs a document, they are indicating their agreement, acceptance, or acknowledgment of the statements and commitments contained within it. This action carries legal weight, as a signature binds the individual to the terms of the document, making it an essential element of contractual agreements and other formal declarations.

While a notary seal and a witness statement can also play important roles in the validation and verification of a document, they do not inherently signify approval by the signer. A notary seal is used to authenticate the signature and verify the identity of the signer, while a witness statement signifies that a third party observed the signing process. However, it is the signature itself that directly represents the approval of the document by the signer.