What must a notarial act include when the individual is identified by personal knowledge?

When an individual is identified by personal knowledge during a notarial act, it is essential to provide an explanation of how the notary knows the person and the duration of that acquaintance. This requirement serves to establish the credibility of the notarial act, as it evidences that the notary is confident in the identity of the signer based on personal experience and familiar relationship. Personal knowledge is a form of identification, and it carries the burden of proving that the notary has sufficient familiarity with the individual to confidently affirm their identity.

The other options do not align with the specific requirements for identification based on personal knowledge. For example, simply providing proof of residency and employment verification is not necessary when the individual is already known to the notary. Additionally, an explanation of methods or needing a witness signature from a third party does not apply in this scenario, as personal knowledge alone suffices to confirm identity without additional verification measures.