C, because "butterfly chaser" seems to point to his opinions on nature.
Answer:
bromine
Explanation:
it is a halogen like fluorine and chlorine
To take a stand can mean a lot of things, like supporting your ideas and beliefs. At times, people support and idea or belief to such an extent that they would die just to defend it.
The author is the origin of the text. And when you are examining the source it is possible that you could look for the author's purpose.