Answer:
Rewind can sue Quito under the legal obligations of the accord between them.
Step-by-step explanation:
It is our legal right to sue a person if he or she is not fulfilling the requirements of an agreement or accord as it was mutually signed and accepted by the both parties.
In our case, as Quito and Rewind Graphix both signed an accord in which the Quito promises to pay Rewind $4000 within 10 days but as he didn't respected the accord. Now, Rewind Graphix can sue him for not fulfilling the requirements of the accord.