Answer:
Charts
Step-by-step explanation:
If you will have a look at the charts in the illustrations in insert tab in MS Word or charts in any other word processor, then you will find that you can draw the charts, or you can visualize your calculations, and thus David with charts can make a report that will clarify the percentage increase in the population in the United States. And if he can make use of any chart type for explaining the percentage increase in the population of the United States.