Ms Demchik Filled the Water Table and Placed a Set

Ms. Demchik filled the water table and placed a set of eight-ounce plastic bottles on a nearby shelf. She put measuring cups and some plastic tubing in the water. As the children arrived, she invited them to play. She observed the children's explorations, then asked questions such as, "Which of these containers holds the most? How do you know?" She was prepared to accept any answer the children might give and to build on their answers with further questions and challenges. What activity type does the water table represent?

A) The water table was a direct instruction activity.
B) The water table was a problem-solving activity.
C) The water table was an exploratory activity.
D) The water table was a guided discovery activity.