The Graph Below Shows Estimated World Population for the Period $10 ^ { 7 }$

Multiple Choice

The graph below shows estimated world population for the period 4000 BC =2000 AD. Note that the logarithm of the world population and not actual population is plotted on the vertical axis. This means, for example, that when the graph reaches 7 on the vertical scale, world population is $10 ^ { 7 }$ and when the graph reaches 9 on the vertical scale, worldpopulation is $10 ^ { 9 }$ .
Log World Population Use the graph to answer the question.
-Describe the general trend in world population during the period 2000 BC to the year 1 AD.

A) World population increases at a slower and slower rate.
B) World population increases at a constant rate.
C) World population is constant.
D) World population increases at a faster and faster rate.