Eight-Year-Old Elizabeth Is Given a Butterfly Net for Her Birthday

Eight-year-old Elizabeth is given a butterfly net for her birthday. She spends hours and hours capturing all kinds of creatures: butterflies, moths, crickets, grasshoppers, beetles, aphids, and pill bugs, to name just a few. She notices that some of the creatures have six legs and some have eight. She also notices that some have hard covers over their wings and others don't. She takes note of these differences and begins to separate her creatures according to the differences she notes. Which of the following, according to Piaget, is the process in which Elizabeth is engaging?

A) equilibrium
B) assimilation
C) foreclosure
D) organization