Sincerity means you aren't lying, example,
"Trust me," he said with sincerity in his voice, "I got this."
The phrase from the lines, which is an example of personification, is that the silence was unbroken. Hence, Option C is correct.
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What is personification?</h3>
A personification is where non-living things are given human traits. It is a device used in poems. Examples of personification are: we describe the wind as blowing, the sun is shining, and many more.
Therefore, Option C: The Silence was Unbroken is an example of personification.
Learn more about personification from here:
brainly.com/question/817239
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H e mentions the name of the refitting project so that he can connect Alvin with the his search for the Titanic. It is shown throughout the story that he was quite driven to discover Titanic. ( hope this helped)