Final answer:
Wireless sync is the easiest for end users but requires more initial configuration by technicians. It offers a convenient, automatic syncing process once set up.
Step-by-step explanation:
The mobile device sync method that is easiest for the user but requires more configuration on the part of the technician is C. Wireless sync. While wired syncing, such as Dock sync and Encrypted wired sync, often involves simply connecting the device to another device or computer with a cable, wireless syncing involves setting up a network connection, which can sometimes be more complex.
Wireless sync often requires the technician to configure network settings, manage permissions, and ensure security protocols, which is more involved than the process for Wired sync. However, once set up, wireless syncing is usually very convenient for the user as it can occur automatically whenever the device is within range of the network.