The answer would be C in the later times trading and hunting were the number one priority
They were forced to work during the industrial revolution because they were seen as being beneficial aspects to a company.. It was much better to hire kids and women in contrast to men because employers were able to save money, men were more costly to employ so this is why it occurred.
Actually, while the correct answer would be D - Government, I think that another answer is more likely - all of them, with the exception of bronze tools and weapons. No civilization could exist with either of those, if we like it or not.
Every civilization so far had an army, art and literature, and a type of government. These are defining things for mankind and shape us in a way. The only differing thing is that bronze tools and weapons were only part of a specific time period. The rest, however, has been accompanying us since the dawn of civilization.
Does it have multiple choice? I know the answer, I just want to make sure it's in the multiple choice.