I would say yes. A famous person's quote could be an example of allusion. Allusion's definition is an expression that is indirect or a passing reference to a place, event, or a famous person. Thank you for posting your question. I hope that this answer helped you. Let me know if you need more help.
Answer: I think the question asks for which of the sentences in the text state the specific opinion of the author, rather than repeating facts from elsewhere. This sentence is this one:
With these facts in mind, Americans need to begin working on ways to improve the cleanliness of home areas for their cats
You can see that it's a recommendation through the verb "need to".