Plan is the answer, it helps to replace the word with one of the answer choices.
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The answer is C .. the topic sentence
康熙, Kangzi was the second emperor of the Qing dynasty ruling from 5th February, 1661 till 20th December, 1722.
Hyperbole because she says she dying it tell someone something, it’s an exaggeration
Complete subject: the longest most boring day of his life
complete predicate: ended with a thud