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Have you ever seen a dog swim? Dogs, like most animals, know how to swim by instinct. That means the dog is born knowing how to swim. The dog may not like to swim, but it does know how to when necessary.
What is the main idea?
A. The dog may not like to swim.
B. People do not know how to swim automatically.
C. Dogs are born knowing how to swim.
What is C. Dogs are born knowing how to swim.