Complex sentence: The Obligations in Freemasonry are those elements of ritual in which a candidate swears to protect the "secrets of Freemasonry"; signs, tokens and words associated with recognition in each degree.
Split into simpler sentences: The Obligations in Freemasonry are those elements of ritual in which a candidate swears to (amoung other things) protect the "secrets of Freemasonry". These are the various signs, tokens and words associated with recognition in each degree.