Who would have been most likely to claim that a slight protrusion in a certain region of someone's skull would indicate that the individual had an optimistic personality? a. aristotleb. santiago ramón y cajalc. william jamesd. franz gall

D. Franz Gall

Explanation:

Franz Gall was a German neuroanatomist and a physiologist. He began the study of the localization of mental functions in the brain.

Claimed the founder of PHRENOLOGY, i.e., the measurement of bumps on the skull to predict mental traits and personality.

Gall came with the idea that a someone's personality could be determined by the shape of their skull. So a slight protrusion in a certain region of someone's skull, changing the shape of it, would indicate that the individual had an optimistic personality.

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a bird that nests only in a particular tree species.