what makes more sense "when will you do your homework?" or "when are you going to do your homework?" if the answer is "In a minute, let me finish playing the videogame"?

when are you going to do your homework

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:

a term is used to describe a sudden revelation in a short story is "showing forth".