Final answer:
In Greek mythology and the play 'Medea' by Euripides, the king of Athens grants Medea the favor of becoming the queen of Athens.
Step-by-step explanation:
According to Greek mythology and the play 'Medea' by Euripides, the king of Athens grants Medea the favor of becoming the queen of Athens. Medea asks for this favor after being abandoned by her husband, Jason. The king's decision allows Medea to have a position of power and influence in Athens.