Do now: Upstander (n): A person who acts to make a positive change
What can/do you do to be an upstander?

the word that best matches the meaning of the expression "went to the big ocean" is died.

the goldfish died, which is why the father looks at the children mournfully. the "big ocean" is the father's way of saying fish heaven. he could have just said that the goldfish died, but this way, the children imagine the fish in a bigger, better place instead of just picturing a dead fish.

explanation:

to refer to another writer's ideas in the course of making your own original statement. when you use a summary in the course of your own writing, you must use your be used in book reviews (see chapter 8), in essays of analysis (see, nection between sentences, and you can create new paragraphs to reflect