Katherine Has Been Baking for Years and She Has Tried

Katherine has been baking for years and she has tried many different brands of ingredients to find the best one for making biscuits.Her belief that White Lily brand flour is superior to either Pillsbury or Gold Medal brands for baking biscuits can most readily be explained through application of:

A) stimulus-response theory.
B) peripheral route to persuasion.
C) central route to persuasion.
D) conditioning theory.
E) cognitive theory.