As data is being stored on a local hard disk, which method would secure the data from unauthorized access?

As data is being stored on a local hard disk, which method would secure the data from unauthorized access?

• a duplicate hard drive copy
• deletion of sensitive files
• two factor authentication
• data encryption

Explanation: Data encryption is the process of converting data into a form where only a trusted, authorized person with a secret key or password can decrypt the data and access the original form.

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