Writing 21 Carlos is writing an informational essay for his European history class. Read a paragraph from his draft and the directions that follow. Before the year 1400, what did most educated Europeans know about the rest of the world? Before answering this question, let's consider how they knew what they knew. Before 1400, Europeans had three main sources of information about the non-European world. The first was the writings of ancient Greek scholars such as the historian Herodotus, who lived in the fifth century ece. The second was descriptions of far-off lands written by European explorers such as the thirteenth-century Italian merchant Marco Polo. The third included maps such as those made by the second-century Roman astronomer and geographer Ptolemy. Which sentence is the best closing statement for this paragraph? A It was on such sources of information that Europeans based their understanding of the rest of the world. B Certainly there were many other sources of information, but these were the most important ones. C Herodotus, Marco Polo, and Ptolemy were famous in their times and remain well known by people even now. D In contrast, modern-day Europeans learn about the world from sources other than Herodotus, Marco Polo, and Ptolemy.