Final answer:
The organization that guarantees the performance of standardized options contracts is the Options Clearing Corporation (OCC).
Step-by-step explanation:
The organization that guarantees the performance of standardized options contracts is the Options Clearing Corporation (OCC). The OCC acts as the central counterparty for all options trades, meaning it becomes the buyer for every seller and the seller for every buyer. This guarantees the performance of the contracts and reduces the risk associated with options trading.