Correct Response: C. File synchronization relates to getting all users of the file the most up- to-date information. A is incorrect because online video gamers communicate through cameras, audio, and chat—not a synchronized data file. B is incorrect because a back-up program captures the data when it runs at night and is not concerned with the changes made the next day until it runs again the following night. D is incorrect because only a single photographer is adding photos and is doing so manually, so no automated syncing will occur.