The answer is "Churchill's lack of enthusiasm makes it seem as though the words of his speech are not his own".
"Their finest hour" was a speech that Winston Churchill gave when he was made the prime minister of United Kingdom.
According to Churchill, the existence of Britain was threatened by countries such as Germany and the country was in "it's finest hours"
The spoken rhetoric of Churchill's "their finest hour shows the lack of enthusiasm. The way he delivered the speech was like he was not interested in the subject and that the words of his speech are not his own".
Therefore, the correct option is C.
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