Read the excerpt from president ronald reagan’s address at moscow state university. the explorers of the modern era are the entrepreneurs, men with vision, with the courage to take risks and faith enough to brave the unknown. these entrepreneurs and their small enterprises are responsible for almost all the economic growth in the united states. they are the prime movers of the technological revolution. in fact, one of the largest personal computer firms in the united states was started by two college students, no older than you, in the garage behind their home. 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. like an athlete in competition or a scholar in pursuit of the truth, experience is the greatest teacher. which is a substantiated opinion?

Read the passage from sugar changed the world. sugar is a taste we all want, a taste we all crave. people throughout the planet everywhere have been willing to do anything, anything at all, to get that touch of sweetness. we even know exactly how thrilling it was to taste sugar for the first time. when the lewis and clark expedition met up with the shoshone, who had little previous contact with old world products, sacagawea gave a tiny piece of sugar to a chief. he loved it, saying it was "the best thing he had ever tasted." sugar created a hunger, a need, which swept from one corner of the world to another, bringing the most terrible misery and destruction, but then, too, the most inspiring ideas of liberty. sugar changed the world. we begin that story with a man who could never know enough. how does the conclusion of the prologue support the authors’ purpose? select two options. it introduces the topic that will be addressed next. it provides information about the authors. it states why the topic is relevant to readers. it cites sources the authors used in the text. it explains how the authors came to study the subject.