Read the claim.
the way to improve education is to divide schools by gender, so that males and females are taught separately.
which sentence provides the best supporting evidence for the claim?
a)if students spend even 10% of their time being distracted by the opposite gender, then that is just silly.
b)my dad has been a teacher since 1993, and i think he does fine teaching in a school that has only male students.
c) at least 50% of my class is the opposite gender, and the amount of time they are distracted by the opposite sex is minimal.
d)a 1993 study showed that teachers tend to favor males over females, thereby creating an inequality in mixed-gender schools