Incomplete question. However, I inferred how the phrase is used in everyday conversation.
Answer:
The situation was beyond anyone's control.
Explanation:
It is fitting to use this phrase because of what we know about Greenland, it is an area that faces extreme cold weather which is highly uncontrollable.
Thus, the phrase "at the mercy of" suggest that the weather made them vulnerable to any condition.
I believe the answer is B) How to determine the difference between right and wrong. Many medieval texts were themed off of this question. They were about great heroes defeating their foes in great battles.
Hope this helps! Please let me know if I'm wrong :)
How you would represent the house and what you would do for your school.
The author used chronological order to show how things have evolved through history