It is by a.e housman this is yur answer
I think to opt with option b COMPARE AND CONTRAST
You could use the word enforcing. It introduces the idea its not by choice.
Answer:
To give information about topics related to the main topic
Explanation:
Supporting details are words, phrases, or statements that will support, define, or explain the main idea to the reader. Whenever you are asked to explain the main idea of a piece of writing, you should try to use supporting details found within the text to do so.
