Hey there!
Here is your answer:
The proper answer to this question is option D "the land of forest".
Reason:
The word "leaf" in the beginning of the question is a key term which allows me to use context clues which means leafs are mainly found in forest and now in fire, or water, or lighting.
Therefore the answer is option D.
If you need anymore help feel free to ask me!
Hope this helps!
~Nonportrit