You observe Maria organizing all of her Barbie and Ken dolls into separate piles. One pile consists of

Question

brunette Barbies; one pile consists of blonde Barbies; and one pile consists of all Ken dolls. Which of the
following concepts are you observing?
A. Counting
B. Measuring
C. One-to-one correspondence
D. Classifying

my answer is d.

Answer 1

Right.

Answer 2

Thanks