Which One of the Following Teaching Practices Is Most Likely

Which one of the following teaching practices is most likely to encourage students to elaborate as they study new material?

A) Help them to locate Berlin on a map of Europe.
B) Ask them how they might apply the principle that gas expands when heated.
C) Ask them, "Who remembers what the chief exports of Japan are?"
D) Say, "Yesterday we learned the safe way to hand a pair of sharp scissors to someone else.Who can show us how we learned to do that?"