is defined as the condition in which all of the data in the database are consistent with the real-world events and conditions.

Answer:
The bystander effect is a theory that people are less likely to help if there are others around.
hope this helped :D
Because you never know if the person over the phone is trying to scam you or not, so if you were to give them your ssn they would use your identity for stuff that they want. I hope this helps :)
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Explanation:
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