Look at the graphic from Citizenship.

In 1961, President John F. Kennedy said, "And so, my fellow Americans: ask not what your country can do for you. Ask what you can do for your country." He had a good point. Citizenship gives you a lot of rights, but it also requires some responsibilities. The country needs citizens to stay informed on issues, obey the laws, serve on juries in court trials, and pay taxes. Citizens have also been called upon to serve the country in times of war.&quot

The author most likely includes an image of President Kennedy to

help readers understand the way President Kennedy spoke.
draw readers in with a lively picture of President Kennedy.
inspire readers to find more pictures of President Kennedy.
educate readers about the time period when Kennedy was president.