If You Want to Encourage Someone to Avoid Selective Learning

If you want to encourage someone to avoid selective learning processes, which of the following is most likely to be effective?

A) Frame the issue in question as a knowledge gain, rather than a loss
B) Inform the person that there will be a test on the material being presented
C) Present the information repeatedly, so it is particularly familiar
D) Encourage counter-attitudinal beliefs so the person will be motivated to evaluate both sides of the argument