Which excerpt from “The Scarlet Ibis” most foreshadows that the narrator will feel regret for something he has done to Doodle?

But sometimes (like right now), as I sit in the cool, green-draped parlor, the grindstone begins to turn, and time with all its changes is ground away—and I remember Doodle.
Doodle was my brother and he was going to cling to me forever, no matter what I did, so I dragged him across the burning cotton field to share with him the only beauty I knew, Old Woman Swamp.
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.
Once I had succeeded in teaching Doodle to walk, I began to believe in my own infallibility and I prepared a terrific development program for him, unknown to Mama and Daddy, of course.

"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."

The excerpt that most foreshadows that the narrator will feel regret for something he has done to Doodle is: "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." This excerpt suggests that the narrator recognizes the potential for his actions to cause harm to Doodle and that he has been cruel to him in the past, hinting at an impending sense of regret.

The excerpt that most foreshadows the narrator's regret for something he has done to Doodle is: "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."

To identify this excerpt as the one that foreshadows the narrator's regret, we can look for clues in the language and content. The phrase "a knot of cruelty borne by the stream of love" suggests that the narrator's actions towards Doodle are driven by a mixture of love and cruelty. This implies that there may be a negative consequence or regret later on. Additionally, the mention of watching this same quality in others with sadness implies that the narrator recognizes the potential for regret in their own actions towards Doodle. This excerpt foreshadows that the narrator will come to regret how they treated Doodle.