It is: "to convince readers that octopuses are strange"
Explanation:
This essay is written to convince readers that octopuses are strange, hence why they started the text by stating their thesis that, "The octopus is one of the strangest creatures in the sea"
Answer: It ain’t right. Ain’t no man ought to eat his woman’s food year in and year out, and see his children running wild. Ain’t nothing right about that." The answer for this would be option C.