Segall's Research Indicates That People Who Come from Environments Where

Segall's research indicates that people who come from environments where the horizon is a part of the everyday landscape are ______.

A) less susceptible to the Müller-Lyer illusion
B) more susceptible to the Müller-Lyer illusion
C) more susceptible to the horizontal-vertical illusion
D) less susceptible to the horizontal-vertical illusion