Mr Burt, a Student Teacher, Has Been Asked by His

Mr. Burt, a student teacher, has been asked by his university advisor to create an activity in which his early childhood students will perform a seriation of plastic cups in the dramatic play area. Which of the following activities best meets this requirement?

A) ordering the cups from shortest to tallest
B) sorting the cups by red, blue, and green
C) dropping the cups to hear the different sounds they make
D) filling the cups with sand and then mixing it with water