which lines from president reagan’s address at moscow state university contain an opinion? check all that apply.

nancy couldn't make it today because she's visiting leningrad
one of these chips has more computing power than a roomful of old-style computers
but progress is not foreordained. the key is freedom—freedom of thought, freedom of information
you know, one of the first contacts between your country and mine took place between russian and american explorers
perhaps most exciting are the winds of change that are blowing over the people's republic of china
and that's why it's so hard for government planners, no matter how sophisticated, to ever substitute for millions of individuals

But progress is not foreordained. The key is freedom -- freedom of thought, freedom of information. Perhaps the most exciting are the winds of change that are blowing over the People's Republic of China. And that's why it's so hard for government planners, no matter how sophisticated, to ever substitute for millions of individuals.

Explanation:

These three lines express opinions because they do not contain factual information. Saying that progress is not foreordained or that freedom is the key does not transform freedom into what is being claimed, nor does it state anything conclusive about the inevitability of progress. The excitement regarding the changes in the People's Republic of China would still be an opinion even if it were shared by every other person on Earth. Reagan affirming that government planners can never substitute individuals may be true, but it may also be false. The comment is still his opinion on the matter.