Answer: d) All of the above.
Compelling a document signer to be truthful is the main purpose of the "jurat." Typically, this is the function of a Notary (or in Connecticut a "Commissioner of the Superior Court" can can also act as jurat) . The requirements of the jurat is to 1) identify that the person signing the document did so in the officer's presence, 2) that the signer appeared before the officer on the date indicated, and 3) that the officer administered an oath or affirmation to the signer, who swore to or affirmed the contents of the document.