An Effective Method to Test the Ideas of Social Learning

An effective method to test the ideas of social learning theory would be to:

A) prime participants with pictures of faces or with numbers before they are asked to complete a math test.
B) create a novel task for participants to learn and then have them learn the task either with the assistance of experienced others or on their own.
C) ask a group of inventors and scientists how they came up with their most groundbreaking ideas.
D) randomly assign participants to complete a task in which they either learn about famous people or learn about famous places,and assess how well they perform on each type of task.