Correct Answer: C
An important part of an admin’s job is to know who’s logging in to your org. That’s what Identity Verification History is for. Log in as the system administrator then from Setup, enter Verification in the Quick Find box, then select Identity Verification History.Check out the Location column. It defaults to the user’s country, but you can get more detail by creating a custom view.
Option A is incorrect because there is no feature called export wizard in Salesforce
Option B is incorrect because set up audit trail shows when modifications are made to your organization`s configuration.
Option D is incorrect because weekly data export generates backup files of your data on a weekly or monthly basis depending on your edition.
Reference:
https://help.salesforce.com/articleView?id=security_verification_history.htm&r=https%3A%2F%2Fwww.google.com%2F&type=5