Sometimes. If the sentence is two independent clauses then they would need either a period or a semicolon. A comma would be used if you had an independent and dependent clause.
Answer:
People read, saw, and heard only what the government desired.
When Stalin was in power, Russian people lost their freedom. The states control of the media was total. Those who attempted to read or listen to anything apart from what was allowed were punished.
Independent clause uses commas to separate independent clauses when they are joined by any of these seven coordinating conjunctions: and, but, for, or, nor, so, yet.
D. unreliable because his point of view is irrelavant to what he is narrating