Studies Have Revealed Consistent Gender Differences in Verbal Proficiency and Mathematical

Studies have revealed consistent gender differences in verbal proficiency and mathematical proficiency over time and across countries. What is NOT suggested as a possible explanation for these differences?

A) Boys tend to spend more time playing video games, which may support development of spatial-attention skills.
B) Parents tend to spend more time reading to girls than boys, which may encourage girls' reading.
C) Girls tend to spend more time playing with toys that encourage social interaction and people skills.
D) Boys tend to spend less time reading and, thus, do not develop executive functioning abilities.
E) Cultural and gender biases influence the number of men and women entering certain fields.