Answer:
B) a line graph
Explanation:
A line graph is a chart that consists of a vertical y-axis and a horizontal x-axis.
This chart is mainly used to show the changes of some event or values through time.
It would be very helpful to visualize the changes in the homicide rate in Washington, D.C. over the past twenty years because it would show how the line increases or decreases (depending on the values) giving the person that sees it a more useful interpretation.
