I'm pretty sure it's C) or D) because it seems those make the most sense because providing excitement does not matter if that is not their point, repeating a previous point is practically useless because that point has already been said.
Answer:
Perform data backup on the work computer
Explanation:
It is very important that at every point in time that a technician will perform a maintenance, repair, or troubleshooting. the data on the work computer should be backed up to avoid loss. This is done to avoid data loss resulting from failure from hardware or software, backup provides copy of critical data immediately the maintenance is done, therefore backup is very important before any troubleshooting is done.
I think it is WAN (Wide Area Network).
