The correct answer is:
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[B]: "The speaker's mental state shifts more and more towards madness."
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If it doesn't have any evidence to back up the claim then it's not fact but an opinion of someone believes.
since the word "decisive" does <em>not </em> have a prefix, the prefix in decisively would be "decisive" .
hope this helps ^^
Answer:
He provides empirical evidence to show that perseverance will lead to success in a prolonged war.
A.Communism poses a threat to freedom and to democracy.
Because the rise Communism threat at the time.