Final answer:
The foreshadowing sentence is Sentence 4, indicating something significant and possibly tragic happened to Doodle.
Step-by-step explanation:
Sentence 4 is the foreshadowing sentence in the excerpt from "The Scarlet Ibis." It hints that Doodle is no longer present in the narrator's life. The phrase 'as I sit in the cool, green-draped parlor' suggests that the narrator is reminiscing about the past and feeling a sense of loss. This foreshadows that something significant and possibly tragic happened to Doodle.
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