The correct option is b.Bar chart.
A Bar chart would be the best to show the change over time from 2007 to 2008.
What is a bar chart used for?
Bar charts show the frequency counts of values for the different levels of a categorical or nominal variable. Sometimes, bar charts show other statistics, such as percentages.
What is a bar chart?
A bar chart or bar graph is a chart or graph that presents categorical data with rectangular bars with heights or lengths proportional to the values that they represent. The bars can be plotted vertically or horizontally. A vertical bar chart is sometimes called a column chart.
Learn more about a bar chart here https://brainly.com/question/1417364
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