How Could a Father Use the Reference Group Effect to Encourage

Multiple Choice

How could a father use the reference group effect to encourage his young son to eat more vegetables?

A) The father should tell his son to think about all of the starving children in the world.
B) The father should arrange for his son's vegetable-loving friends to come over and eat lunch.
C) The father should tell his son that only bad children don't eat their vegetables.
D) All of the above