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A dog's sense of smell has improved since being domesticated because ______.

A: They evolved to have a better sense of smell
B: They have adapted their sense of smell
C: Humans have bred them to have a strong sense of smell
D: It was essential to their survival

User Mikus
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A dog's sense of smell has improved since being domesticated because C) Humans have bred them to have a strong sense of smell.
User Andy Hayden
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C: Humans have bred them to have a strong sense of smell
User Shevonne
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