I believe the correct answer is C. a sense of comfort and security.
This is not just any kind of overtaking or conforming or keeping within limits. It means those five nations will function as one, protect their common interests along with protecting each other, and prosper together. Also, the togetherness will make them far more secure. Hence the word "enfold", which also means to wrap up, to hug, to embrace.
Throughout the novel Voltaire employs the element of setting to signify the importance of distorted societal values. Candide grows up in beautiful castle in Westphalia; he is a young man of suspicious birth. Voltaire begins with this setting so he can expose the warped values that are related to social status.
Answer:
Last one which starts with whatever