What must be included in the notarial seal's impression?

The correct answer is that the commission expiration date must be included in the notarial seal's impression. In the practice of notarial duties, the seal serves as a significant component that authenticates the notary's acts. Including the commission expiration date in the impression ensures that the notarial act is valid and legally recognized. This information confirms that the notary was authorized to perform the notarization at the time it took place; if the commission has expired, any acts performed after that date may be deemed invalid, which could lead to legal challenges or disputes regarding the notarization.

While the other options such as a personal motto, notary signature, and location of notarization might be relevant or required in different contexts, they are not standard elements that must appear in the notarial seal's impression. The emphasis on the commission expiration date is specifically rooted in the need for clarity and legitimacy in the notarial process.