Which of the Following Is an Example of the Premack

Multiple Choice

Which of the following is an example of the Premack principle?

A) Disallowing a child to have ice cream because he did not eat the vegetables served
B) Allowing a child to have ice cream only if he eats the vegetables served
C) Allowing a child to have ice cream even if he does not eat the vegetables served
D) Allowing the child to have an extra ice cream cone if he dislikes the first cone