Final answer:
Isaac's character in 'Disgraced' brings out Amir's jealousy and insecurities, revealing a deep-seated crisis of identity.
Step-by-step explanation:
In the play Disgraced by Ayad Akhtar, the character Isaac serves to bring out the trait of jealousy in Amir. Isaac, being an art curator who takes interest in Amir's wife's art, highlights Amir's insecurities, especially in relation to his cultural identity and his marriage.
Amir's interactions with Isaac reveal the contrast between Amir's struggle with his Muslim heritage and Isaac's comparatively liberal viewpoint. This clash accentuates Amir's inner conflict and exacerbates his feelings of envy and inadequacy, ultimately leading to a pivotal crisis of identity that is central to the play's narrative.