Question

choose the correct capitalization. dorys pet goldfish swam across the atlantic ocean.

Explanation:

In the sentence "Dory's pet goldfish swam across the Atlantic ocean", the word "ocean" should be capitalized when part of a proper noun (Atlantic Ocean) because geographical names (specific oceans, seas, etc.) are proper nouns and require capitalization of all significant words in the name. So the correct capitalization is "Atlantic Ocean".

Answer:

Dory's pet goldfish swam across the Atlantic Ocean.