According to Kenney-Benson et al. (2006) , girls' high grades are linked to their ________.

A) physical attractiveness
B) drive for mastery
C) better-developed parietal lobes
D) willingness to indulge in disruptive behavior in class

The article states that girls' high grades are linked to their drive for mastery, which refers to their motivation to acquire knowledge and skills in a particular area of interest. This suggests that girls who are highly motivated to achieve their goals are more likely to earn good grades, regardless of their physical attractiveness or brain development. The option D is incorrect because it implies that girls who engage in disruptive behavior would earn higher grades, which is unlikely to be true.