Apple devices come with built-in security features, such as data encryption, Secure Enclave, and passcode enforcement, which MDM solutions leverage to secure devices. These features allow MDM to enforce policies like requiring a passcode, enabling encryption, or remotely wiping a device if lost. Location Services (option A) provides geolocation data but is not a core security capability used by MDM for securing devices. Enrollment profiles (option B) are the mechanism to connect a device to MDM, not a capability that secures the device itself. TheApple Platform Security Guidehighlights how MDM utilizes these built-in features to enhance device security, making option C the correct choice.