Its c :) i just took the review i hope this helps
Answer: Not influenced by personal feelings, interpretations, or prejudice. Based on facts; unbiased
The tundra is a harsh envioroment so only the toughest plants and animals can survive.
Personally, the option I would choose is D. exonerated: out of, to complete the analogy. My reasoning would be that when you are carried by emotions, you are elated, the same way that when you are exonerated, you are deposed, or out of a certain service.
However, the answer that I found people saying is correct all over the Internet is C. coherent : to place, so, I don't know whom you should believe, sorry. :/
Answer:
The Correct Answer Would Be D. in/deed you can say both words and they will make perfect sense other than the other words listed
Also B. play/er would be one due to the fact you can say both