Final answer:
The area of the Indian Ocean is about 39% of the area of the Atlantic Ocean, making option A) Atlantic Ocean the correct answer.
Step-by-step explanation:
The area of the Indian Ocean being about 39% of the area of another ocean implies we're looking for an ocean which is larger than the Indian Ocean. The four options given are: A) Atlantic Ocean, B) Pacific Ocean, C) Southern Ocean, D) Arctic Ocean.
The Pacific Ocean is the largest ocean on Earth and the Atlantic Ocean is the second largest. The Southern Ocean is smaller than the Indian Ocean, and the Arctic Ocean is the smallest of all the oceans. Considering the Indian Ocean as 39% the size of another implies we are looking for an ocean approximately 2.56 times larger than it. This would be closest to the Atlantic Ocean, which suggests option A) Atlantic Ocean as the correct answer.
The Pacific Ocean would be too large, and the Southern Ocean and Arctic Ocean are both smaller than the Indian Ocean, so they would not be proportionally correct according to the question.