Final answer:
The best statement encapsulating Medea's emotions that overshadow her maternal love is her insatiable desire for revenge.
Step-by-step explanation:
The statement that best encapsulates the overwhelming emotions of Medea that diminish her love for her children is C) "Medea's love for her children has been replaced by an insatiable desire for revenge." This encapsulation is coherent with the themes in the chorus of "Medea" by Euripides, where the character's intense emotions, particularly her need for vengeance against her husband Jason, overtakes all other feelings, including her maternal affection. Medea's actions, including sending a poisoned cloak to Jason’s new bride, demonstrate a profound shift from maternal love to vengeful hate. She rationalizes her actions as necessary to quell and crush her target’s heart, indicating a replacement of organic emotions by calculated revenge.