Cause
Effect
?
Dogs sniff around fire
hydrants
Based on the Article, which best replaces the question mark in the diagram above?
A It's one of the ways dogs can mark time and evaluate how safe the surroundings are.
B It's one of the ways dogs are considered social animals.
C Dogs have an amazing ability to learn information beyond their sense of smell.
D Dogs can sniff out bombs people would never find.
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