Which of the following is not a responsibility of a notary?

Determining the legality of documents is not a responsibility of a notary. Notaries perform specific functions primarily aimed at preventing fraud during the signing of important documents. Their primary duties include witnessing signatures, verifying the identity of signers, and maintaining a detailed journal of notarial acts.

Notaries are responsible for ensuring that the signers are who they claim to be and that they are signing documents willingly and without coercion. They must also keep a record of each notarial act to ensure accountability and to provide a reference should any questions arise later. However, the interpretation of whether a document is legally valid or should be executed is outside the scope of a notary's duties. This is a legal question typically reserved for attorneys or legal professionals.