The correct option is J “proven is that” since no comma is needed after the word “proven”. Grammatically speaking, commas are used to help in the meaning of a sentence by grouping and separating words or clauses. By using commas, a sentence can avoid misunderstanding, but in this case the comma is not necessary to have a clear meaning on its own.
At the end of what story? We need the story!
Answer:
they choose their occupations for them
none of them have memories of sunlight and animals because the giver has them and there isn't anything else in the city
they aren't allowed out of the city and if they tried to escape they try to kill them
