These are a little tricky.

I didn’t think c was the answer because it didn’t mention anything about concerns/interests in the passage. I guess we can assume but I thought the whole point is to try not to assume rather connect instead. I can see why C would be the answer now but it just seems a bit flawed as well as a or b is.

So for the Chained together part do you organize this based upon which flows better or is it based upon the groups? Because I understand the overall concept but sometimes, I don't order them correctly for the chained together part.