Which of the following is classified as satisfactory evidence of identity?

Satisfactory evidence of identity requires a reliable form of identification that is widely accepted and verifiable. A state-approved ID typically meets the criteria for satisfactory evidence of identity, as it is issued by a government authority and contains crucial identifying information such as the individual's photo, name, and signature. This type of identification is generally considered reliable because it is difficult to forge and is recognized as a legitimate form of identification across various settings, including notary public transactions.

In contrast, a personal letter from the signer may not provide verifiable identity information and lacks the formal verification process associated with government-issued identification. Similarly, a utility bill, while it may show the individual's name and address, does not provide a photo or a government verification process, making it less reliable for identity verification. An email confirmation does not constitute satisfactory evidence since it can be easily altered or fabricated, lacking the formal recognition and assurance of authenticity that comes with a state-approved ID. Therefore, the state-approved ID is the most appropriate and reliable choice for confirming a signer's identity.