The reason that provides the best explanation of why a bar graph was selected to show the data in the table is that Bar graphs are used to compare separate items.
A bar graph is a visual tool that uses bars to compare data among categories. It may run horizontally or vertically such that the longer the graph the greater its value. A bar graph or bar charts uses bars to show comparisons between categories of data. It will always have two axis, one being generally numerical values, and the other describing the types of categories being compared.
