A. 'Beauty is in the Eyes of the Beholder'
B. 'The Humanist Approach'
C. 'Customers are Always Right'
D. 'There is no Right or Wrong of Anything; All Depends on People's Feelings'
E. The Humanist Approach to Art and Economy'
Explanation: The excerpt discusses the Humanist Approach, stating, "There is no right or wrong of anything; all depends on people's feelings" (Q3) in the context of art. This philosophical idea is best summarized by the idiom "Beauty is in the Eyes of the Beholder," which means beauty is subjective and determined by the observer.
