Final answer:
The correct sentence should include a change after 'boy' to insert the relative pronoun 'who', thus the answer is option d).
Step-by-step explanation:
The sentence "Gone was the wholesome, bright-eyed, midwestern boy that stepped off the bus three weeks ago" should have a change after "boy" to maintain proper syntax. Therefore, the correct answer is option d) After "boy," resulting in the corrected sentence: "Gone was the wholesome, bright-eyed, midwestern boy, who stepped off the bus three weeks ago." The relative pronoun "who" is used to refer to the subject of the sentence, the midwestern boy, and provides a clearer and grammatically correct connection between the two parts of the sentence. It's important to recognize the role of punctuation and relative pronouns in constructing clear and correct sentences.