A topic sentence is a sentence that includes the main idea of the paragraph.
It is a sentence that is usually found in the beginning of a paragraph, although not always. It is the sentence that states what the main idea of that particular paragraph is, and then the paragraph is there to support this sentence, not the other way round.
The answer is B if not then it is C
Macbeth persuades the murders to kill banquo and his son
3. Establish a purpose for reading.
You are explaining why (the purpose) you are reading the book (for your enjoyment)
I don't understand try being more detailed
