The answer is the last one, D. All of the other transitions indicate that the writer will either go into further detail on the subject or list other reasons as to why this would be correct. However, D clearly uses a contrasting transition to introduce a new argument.
They will get thirsty and wither away
However, instead, and therefore are examples of (advanced) transition words
Answer:
the anwser is D joy trust me
Explanation:
read it again!
I believe that the answer to your question would be A and B. I hope this is helpful.