I would say that it depends on the audience. Personally, a debate regarding ethics and moral dilemma is interesting. Read The Fat Man and the Impending Doom. It's just one paragraph so it's not going to bore audience.
https://thedailydilemma.wordpress.com/2007/06/18/fat-man/
I believe that this type is a lecture-forum discussion.
Is this how to kill a mockingbird?
Answer:
Hola!
She did not really want that particular job.
She had been looking for a long time when she got the offer
These two sentences will be joined by 'although'
Although she did not really want that particular job, she had been looking for it for a long time when she got the offer.
So according to your options option (A) is correct.
_________
Hope this helps u...☺
C. to <span>persuade the reader that by taking steps now they can help fight the damage done to earth's atmosphere.</span>