What type of characterization is this: "A male Eleven named Benjamin had done his entire nearly-Four years in the Rehabilitation Center,
working with citizens who had been injured. It was rumored that he was as skilled now as the
Rehabilitation Directors themselves, and that he had even developed some machines and methods to
hasten rehabilitation,

flat

Character

Explanation:

there is limited information about this  

Character we dont know much about him.

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:

the answer is camped