Which of the graphs below have Euler circuits? 
Definitions:
Brand Conscious
Concerning individuals who have a strong awareness of and preference for certain brands over others, often influenced by perceptions of quality, status, or value.
Status Conscious
Being highly aware of and concerned with one's position or rank within social or professional hierarchies.
Developed Countries
Nations with advanced economies characterized by high gross domestic product (GDP) per capita, industrialization, and a high standard of living.
User-generated Content
Content created and shared by the users of an online platform or service, including videos, photos, blog posts, and comments, contributing to the content's value.
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