Hippocrates thought that abnormal behavior resulted from an imbalance in the four humors, one of which was phlegm; option A
<h3>Who was Hippocrates?</h3>
Hippocrates was an ancient Greek philosopher and physician who lived between the period of 460 BCE to 375 BCE.
He is well known for the Hippocratic oath which Physicians in modern times take.
Hippocrates thought that abnormal behavior resulted from an imbalance in the four humors; blood, yellow bile, black bile, and phlegm.
In conclusion, Hippocrates provided insight into disease during his time.
Learn more about Hippocrates at: brainly.com/question/27999234
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You're right. The Upper Mantle is directly under the Crust. Hope this helped! =^-^=