Who is Starr Carter and how does
she balance living in two worlds?

Explanation:

Stenberg stars as Starr Carter, a young woman who is constantly switching between two worlds: the poor, mostly black, neighborhood where she lives and the rich, mostly white, prep school she attends. The uneasy balance between these worlds is shattered when Starr witnesses the fatal shooting of her childhood best friend Khalil at the hands of a white police officer

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: