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:
<span>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".
</span>
The answer is an exponential growth. The equation is y=3(3.4)x and since 3.4 > 1, this is an exponential growth. Exponential growth occurs when the growth rate of the value is proportional to the function's current value, resulting in its growth with time being an exponential function. Thank you for posting your question. I hope that this answer helped you. Let me know if you need more help.
The answers are right good jib