When choosing a dog, families should not only evaluate the dog' s ability to interact with other animals, but should also inquire about the dog' s friendliness to unfamiliar people. Dog experts attempt to justify inquiries about a dog' s friendliness to unfamiliar people by saying that this behavior might also mean the dog could adjust well to new children in the family. But such behavior might also show that the dog is an incompetent watchdog. Ttherefore, families looking to choose a dog should not be concerned with the dog' s friendliness to unfamiliar people. The argument is flawed because it overlooks each of the following possibilities EXCEPT:
A: A dog might be able to distinguish between children and those people who pose a danger to the family.
B: Dogs that are adopted by families often view and treat unfamiliar people like they do other animals.
C: A dog's friendliness to unfamiliar people might be a good indicator of how the dog interacts with other animals.
D: A dog might appear to be friendly to unfamiliar people at pet stores, but might really be an unfriendly dog.
Choose A, B, C or D as your solution.
D