Which of the following is included in the acknowledgment notarial certificate?

The acknowledgment notarial certificate includes essential details that validate the authenticity of a notarized document. The inclusion of the date of notarization is crucial because it indicates when the signing took place, which is important for legal and record-keeping purposes. This date helps establish the timeline of the transaction and can be significant in determining the validity of the document if disputes arise later.

The number of signers and the purpose of the document are not standard components required in all acknowledgment certificates. While knowing the number of signers could be useful, it is not universally required for the certificate itself. Similarly, the purpose of the document does not necessarily need to be stated in the acknowledgment since the acknowledgment is primarily focused on the verification of the identities and the capacity in which the signers are acting. The location of the notary's practice is also not a requisite element for the acknowledgment certificate; rather, what is critical is the location where the notarization actually takes place rather than where the notary is based.

Therefore, the correct choice highlights a fundamental requirement for acknowledgment notarial certificates in Illinois and reflects the legal significance of documenting the date of notarization.