The correct answer among all the other choices is A. The city. This is what the boy who became an apprentice engineer always talk about when he was in town according to the reading. Thank you for posting your question. I hope this answer helped you. Let me know if you need more help.
The answer is D because an eye rhyme refers to words that look like they should rhyme but sound different. "Thrush" and "Bush" both end with "-ush" but the "u" is pronounced differently.