<span>a distinctive feature or dominant idea in an artistic or literary composition.
Or,
</span><span>a short succession of notes producing a single impression; a brief melodic or rhythmic formula out of which longer passages are developed.</span><span>
</span>
okay bet i will watch me :)
So that the reader understand how they lived.
The topic sentence is a sentence that expresses the main idea of the paragraph in which it occurs. The subject of the topic sentence is (a) the topic itself and (b) the controlling idea. The sentence(s) in the paragraph that do not support or prove the controlling idea is the topic sentence; the topic sentence is the main focus, the controlling idea is your opinion about the topic {sentence}.
Answer: The answer is C. The infinitive "to know" is functioning as an object.
