Colons are used to start off a list
He fairness doctrine was a former US policy that required TV and radio broadcasters to present opposing viewpoints on any controversial topic that was important to the public. The abolition of this rule allowed one-sided networks to gain prominence. Now, nothing controls the amount of time given to opposing viewpoints. Networks can independently control this.
In my opinion I think it’s the last one, “the caged bird beats his wing because he cannot be free.”
Answer:
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