City developer is considering building an amusement park near a local river. what tool would the developer predict the future path of the river?
series of city maps from nearby cities
come on
guide map of the new amusement park.
thermal map of the area
series of topographic maps in chronological order

Series of topographic maps in chronological order.

Explanation:

If we see the map in a chronological order, then that gives us the rough idea about the flow, angle and area of the river. A detailed study of the topographic map gives us the idea about the direction in which the river has flown over the years. Based on this map we can successfully form a model which will give us a future position and flow pattern of the river. So in the light of the above facts the use of the topographical maps in the chronological order is the most appropriate tool for mapping the future course of the river.

the value of the 4 in the hundreds place is 400 while the value of th e 4 in the tens place is 40

400 is way bigger than 40.