An archenemy is someone who is hostile towards someone or something else. In this case, the US and Soviet Union were archenemies because they were both very powerful and both of them wanted to be better than the other.
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Answer:
B. clinical psychologist.
Explanation:
Clinical Psychology is a field of psychology dealing with the evaluation and diagnosis of mental illness, unusual behavior, and psychological disorders. Clinical psychologists are consulting people to recognize their social, psychiatric and behavioral issues in their lives. The psychologist can detect any current or possible conditions by observation, interviews, and studies. As per the question, Arata's problem is psychological and therefore should be treated by a clinical psychologist.
Chang'an means of "<em>Perpetual Peace</em>" in traditional Chinese; and it can be described as an "<em>Everlasting Capital</em>" because it was persistently used as a capital again and again by many fresh Chinese rulers (<em>more than 10 dynasties</em>);
it can also be described as a <em>flourishing</em> cultural & <em>commercial center</em>; Chang'an has been one of the most important cities of the world.