Final answer:
The entity that acts as the guarantor of each CBOE-traded contract is the Options Clearing Corporation (OCC).
Step-by-step explanation:
The entity that acts as the guarantor of each CBOE-traded contract is the Options Clearing Corporation (C). The Options Clearing Corporation (OCC) is the world's largest equity derivatives clearing organization. It guarantees the performance of options and futures contracts traded on various exchanges, including the Chicago Board Options Exchange (CBOE).