Why is it that people who live in Western cultures are more susceptible to the Müller-Lyer illusion than those who do not?

• A. Buildings have more straight lines and corners in Western cultures.
• B. People in Western cultures tend to experience an accelerated rate of presbyopia.
• C. People in Western cultures adapt more readily to changes in the Gestalts in their surroundings.
• D. There is a higher rate of monochrome color blindness in Western cultures.