The case of Phineas Gage is important because it gave us evidence to suggest that (blank) . a) male and female brains process information differently
b) the limbic system has very little to do with our emotions
c) severing the corpus callosum would inhibit our ability to communicate with both sides of the brain
d) damage to the brain's frontal lobes could alter personality and behavior

d) damage to the brain's frontal lobes could alter personality and behavior

Explanation:

When Phineas Gage got that rod shot through his frontal lobe and miraculously survived he changed as a person, he became a kind of walking Psychological phenomenon in the sense that he showed that damage to the frontal lobe would alter the way a person acts and the way they go about themselves. It was really the first time that we, humans I mean, were able to study the way the brain works.