The best transition word for the sentence would have to be C. Furthermore.
A and B are transition words that would be changing to good news, and D is for telling examples.
I hope its right!
A warrant is an underlying assumption or inference that the writer takes for granted.
It means that what is that set of beliefs and it also tells us that is not important how important it is, In other words it importance doesn't matter.
A key detail is something that is important.
A minor detail is something that little and is not that important.
