What does this quote mean? From Catcher in the Rye " I liked old Morrow's mother"

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What is the effect of describing polyneices as a "wild eagle screaming insults above our land"? question 5 options: we understand that polyneices was wild and fierce in battle. we understand that polyneices deserves to remain unburied due to his inappropriate behavior. we understand that polyneices single-handedly won the battle. we understand that polyneices is ruled by a half-human, half-bird goddess.