Answer:
I'm not sure where the blank is but I think the answer is carefully.
Explanation:
The first one is D and the second one maybe B
I hope I helped and I wish you the best of luck on your test :)
Answer: Division
Explanation: Division is the organization structure used by the author in the section one to break down or divide the broad topic of 'Incredible Ocean's into the five major oceans. Remember the classification structure involves ranking, rating, or evaluating, but here, the author simply divides them into categories
