Answer:
B. Egyptians built cites in a north-south direction to take advantage of wind power.
Explanation:
Trust me i thought it was C also but looking back in the Lessons its B
"Nile River
The Nile River is the longest river in the world. The river flows more than 4,000 miles north from East Africa to the Mediterranean Sea. The river was the perfect highway. It is one of the few rivers in the world that flows from south to north! The river’s current allows boats to travel from south to north. The winds from the Mediterranean Sea let boats sail to from north to south. Life in Egypt began in the region around the Nile River."
