Final answer:
The sustainable agreement between Isabella and Franco to collude and provide monopoly-level output depends on Franco's plan to transfer to another college next year.
Step-by-step explanation:
The sustainable agreement between Isabella and Franco to collude and provide monopoly-level output depends on the condition that Franco plans to transfer to another college next year.
Collusion and setting prices collaboratively are illegal in many parts of the world. Therefore, if Franco plans to transfer, the agreement becomes sustainable as they will not be operating in the same market.