The correct answer is: B. unreasoning enthusiasm.
Fanaticism is an extreme form of enthusiasm or zeal. It is often associated with a single cause or belief, and can be characterized by a lack of critical thinking or tolerance for opposing viewpoints. Fanatics may be willing to sacrifice their own well-being or the well-being of others in order to further their cause.
In the context of the question, the man is described as being given to fanaticism in his political beliefs. This means that he
is extremely enthusiastic about his political beliefs, and is unwilling to consider any other viewpoints. He may be willing to sacrifice his own well-being or the well-being of others in order to further his cause.The other options are incorrect because they do not accurately describe the man’s political beliefs. Option A, limitations, is incorrect because it suggests that the man’s political beliefs are somehow limited or restricted. Option C, falsehood, is incorrect because it suggests that the man’s political beliefs are false or untrue. Option D, having
no grounds, is incorrect because it suggests that the man’s political beliefs are not based on any evidence or reason.