Answer:
I think it's c
Step-by-step explanation:
The technician at Dion Training found a break in the single-mode fiber-optic connection between the main and satellite offices using an OTDR. The break was located around 12.4 kilometers away from the main office. To fix the issue, the technician will need to locate and replace the damaged section of the cable. Once repaired, the fiber-optic connection should be fully functional and able to transmit data between the offices again.