According to the sentence, Alfred Adler believed the primary source of human motivation was due to one’s include option C: Strive for superiority.
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What is Strive for superiority about?</h3>
In accordance to the Adler's theory for personality and personality types, the striving for superiority is the reason behind the personality as explained by the Alfred Adler.
Sigmund Freud identifies two main drives that regulate and motivate behavior, Eros, and Thanatos.
Therefore, correct option is C.
Learn more about Alfred Adler, refer to the link:
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