Porter's Cluster Theory holds that geographical areas with a large concentration of a certain type of companies allow that area to obtain an absolute or comparative advantage. How do those companies benefit from the presence of other companies like them in the same area?
a. they can attract talented employees
b. such concentration fosters creativity as
employees' know-how travels from
employer to employer
c. the concentration of talent fosters
innovation.
d. All of the above
e. None of the above