It's A. The subject is concern for the continued existence of the panther (the concern is what the sentence is about), and the phrase 'Because the panther is endangered already' comes before it.
Illusion. (n.) a false idea; something that one seems to see or be aware of that really does not exist.
Keeping john alive goes west a piece of historical fiction.
<u>Explanation</u>:
- In this historical fiction, johnson will be taking a plot that will be located in the past. This would be a style of western literary genre composed of many novels and fiction. This would be based on the American Revolution that was happened in 1777.
- He delineates novels before the middle of the plot. After that, the plot will make johnson alive. Keeping him alive is the climax of this fiction.