When Asked If He Would Like to Have Some Fruits

Multiple Choice

When asked if he would like to have some fruits along with his breakfast, Milo declines. He then attends an all-day presentation on the nutritional benefits of eating fruits. At the end of the presentation, Milo is again offered some fruits to eat and he accepts. What effect may be responsible for the change in Milo's response?

A) History
B) Maturation
C) Regression toward the mean
D) Testing