Question

read the excerpt from president ronald reagans 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 not 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, theyll tell you its all that they learned in their struggles along the way, yes,
which is a substantiated opinion?
one of the largest computer companies began in a garage
small businesses are the reason america has a strong economy
experience is the best way for entrepreneurs to learn
people are often wasteful in free market societies

Explanation:

A substantiated opinion is one that has evidence or examples to support it. In the text, it is stated that one of the largest personal computer firms was started by two college students in a garage. This provides evidence for the statement "One of the largest computer companies began in a garage". The other options ("Small businesses are the reason America has a strong economy" - no specific evidence given in the text excerpt; "Experience is the best way for entrepreneurs to learn" - while there is mention of learning from struggles, it's more of a general idea without a specific example like the garage - started company; "People are often wasteful in free - market societies" - the text only says some people see waste in the free - market, not that people are often wasteful with evidence).

Answer:

One of the largest computer companies began in a garage.