Which descriptions are true about a civilization?

4 are correct.

A: Well-developed cities grew with large numbers of people living close together.


B: People do different jobs such as Individual craftsmen producing goods to sell.


C: Trade diminishes as more people make a wider variety of goods.


D: People work on large, organized projects, such as a levee.


E: A few people produce enough food for everyone.


F: Family life is centered on the production of crops.