Which excerpt from the scarlet ibis most foreshadows that the narrator will feel regret for something he had done to doodle

There is within me (and with sadness I have watched it in others) a knot of cruelty borne by the stream of love, much as our blood sometimes bears the seed of our destruction, and at times I was mean to Doodle.

Explanation:

This was probably one of the saddest lines in the entire story. He is older when he says this thinking back on the memories of him and his brother.

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