On the First Day of School,Henrik's New Teacher Asks Her

On the first day of school,Henrik's new teacher asks her students to describe themselves so she can get to know them.Henrik tells her that he's a boy,he's a cub scout,he plays soccer,and he's a member of the Bullwinkle Moose Fan Club.Henrik is demonstrating his mastery of

A) class inclusion.
B) seriation.
C) conservation.
D) classification.