What Is the Best Way to Really Prove to Yourself

Multiple Choice

What is the best way to really prove to yourself that you understand an idea?

A) Tape record your explanation and play it back for yourself to be sure it makes sense.
B) Formulate questions concerning the idea and see if your friends can answer them.
C) Articulate the idea to others and confirm their understanding when you finish.
D) Ask someone else to explain the idea to you to see if their explanation matches yours.