Read the excerpt from President Reagan’s Address at Moscow State University. Some people, even in my own country, look at the riot of experiment that is the free market and see only waste. What of all the entrepreneurs that fail? Well, many do, particularly the successful ones; often several times. And if you ask them the secret of their success, they'll tell you it's all that they learned in their struggles along the way; yes, it's what they learned from failing.

President Reagan includes the underlined question to

encourage audience interest and participation.
warn listeners against becoming entrepreneurs.
raise an objection to his own opinion and counter that argument.
reference a question in well-known literature and provide an answer.

(the underlined sentence is "What of all the entrepreneurs that fail?")