The best option will be the C. Railroads made the rapid movement of produce and goods into many markets possible.
Because Railroads basically were the key point to national business and economic growth. Eliminating the needs for long and weary trips, while also founding and fueling other soon-to-be huge business industries, such as iron, coal, copper, machinery, etc., railroads made "rapid movement of produce and goods into many markets possible."
It shows the culture of the Kikuyu people in its entirety both
its virtues and its flaws. It shows the
identity of a people and the changes they go through both in ancient times to
the modern era. The author wanted to
give more insight to the culture of his people that is not as primitive as the
Europeans view it.