Read the following excerpt carefully before choosing your answer. This passage is from Senator Marco Rubio's April 2015 Speech at Miami's Freedom Tower.

"My father became a bartender. My mother a cashier, a maid and a Kmart stock clerk. They never made it big. But they were successful."

The purpose of including this line at the beginning of his speech is to

appeal to the audience's sense of injustice by showing how unattainable the "American Dream" is
engage the audience by establishing his authority on the subject
add reliability to his argument by quoting expert opinion on the "American Dream"
establish credibility through examples that show he is personally acquainted with the issue