Question

review the text. the octopus is one of the strangest creatures in the sea. for one thing, it has three hearts. one heart pumps blood to its organs, and the other two pump blood to its gills. octopus blood itself is strange: while the blood of mammals is iron - based, an octopuss blood is copper - based. in chilly ocean depths, it turns out, copper distributes oxygen more efficiently than iron. in octopuses (yes, the plural \octopuses\ is correct), the copper substance that binds to oxygen is called hemocyanin, and it makes octopus blood appear blue. the octopus is also highly intelligent—possibly the worlds most intelligent invertebrate, in fact. (invertebrates are animals that lack backbones.) thanks to its large brain, an octopus can solve problems, dismantle things, and navigate mazes. which best shows that the authors purpose is to inform readers about octopuses? the author provides facts about the octopus, including its habitat (the sea), its anatomy (three hearts), and its intelligence. the author argues that the octopus is one of the strangest creatures in the sea. the author explains how hemocyanin binds to oxygen, causing octopus blood to appear blue.

Explanation:

An informative purpose is shown by presenting facts. The first option lists multiple facts about octopuses like habitat, anatomy and intelligence, which is typical of informative - writing. The second is more of an opinion statement, and the third is just one detailed explanation rather than a collection of facts to inform about octopuses as a whole.

Answer:

The author provides facts about the octopus, including its habitat (the sea), its anatomy (three hearts), and its intelligence.