Which of the following sentences from the article BEST develops the idea that ancient Egypt was an advanced civilization? A Despite the lack of natural resources like forests or an abundance of farm land, a great society emerged. B Over time, however, people learned that the Nile could provide plenty to eat. C Farmers began growing extra crops, allowing others to give up farming and pursue other trades. D They developed a calendar based on the flooding of the Nile that proved remarkably accurate.