Based on what we know about the evolution of life on Earth, which of the planets below would be most likely to contain an advanced civilization? 
Definitions:
Heart
A muscular organ in most animals, which pumps blood through the blood vessels of the circulatory system.
Internal Carotid Artery
A major artery in the head and neck that supplies blood to the brain, eyes, and forehead.
Circulatory Pathway
The route taken by blood as it circulates through the body, delivering oxygen and nutrients while removing waste products.
Brain
The complex central nervous system organ located in the skull, responsible for processing sensory information, regulating bodily functions, and facilitating cognition and consciousness.
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