Final answer:
The theme 'Beauty is in the eye of the beholder' is the best theme because it highlights how everyone perceives beauty differently, supported by the subjective and personal nature of perception and personal response to beauty.
Step-by-step explanation:
The theme 'Beauty is in the eye of the beholder' is the best theme because it highlights the idea that everyone perceives beauty differently, which is evident when the characters in the episode have varying opinions on what they find beautiful.
This theme is supported by the quote 'Beauty lies in the eye of the beholder', which emphasizes the subjective and personal nature of perception and personal response to beauty.
Furthermore, the episode does not explicitly discuss the concept of beauty, but it indirectly provides evidence of subjective judgments of beauty through the characters' different preferences.