The meaning of fleet is the largest group of naval vessels under one commander, organized for specific tactical or other purposes.
Character arc is the story of how the character changes throughout the story.
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The answer which is an example of a theme with a dual nature is D. people who work hard learn values but may not prosper.
The other sentences are pretty linear and expected - a person works hard and is successful in life. D is somewhat different, which is why it has two natures, or a dual nature.
Answer:
computers keep track of everything.
Explanation:
computers keep track of everything.