SAT Inferences Question

Neuroscientist Artin Arshamian and his team sought to determine what affects a person's perception of an odor as pleasant: is it culture, personal taste, or aspects of human anatomy? The team assessed odor preferences in ten groups of people with different modes of living (urban, agricultural, and hunter-gatherer) including urban dwellers from a large city in Thailand and the Seri people from a small community in Mexico. The team observed that across cultures, people generally rated odors about the same: vanillin, which smells like vanilla, was typically rated more pleasant than galbazine, which smells like peanuts. The team therefore concluded that Which choice most logically completes the text?