Answer:
A The Christian church
Explanation:
"Morality as Anti-Nature" is part of Friedrich Nietzsche's "Twilight of the Idols." As a philosopher, he criticized the Christian church on how it promoted its religion.
For him, the main culprit of Anti-Natural morality is the "Christian church." He even stated that "the practice of the church is hostile to life" because it limits the capability of the human being to take action on his detrimental passions. He also asserted that the church was favoring "hypocrisy" because it preached love for all, yet is hostile to its enemies like the "Anti-Christians."
So, this explains the answer.
