Which of the following cables is prone to electromagnetic interference?

EMI is only a problem with copper cabling. It’s caused when the changing electromagnetic fields generated by one cable induce extraneous currents or interference in adjacent or nearby cables. EMI in copper cabling can be reduced to acceptable levels by

Avoiding bunching of unshielded cabling
Keeping all cabling away from power cords and transformers
Using shielded twisted-pair (STP) cabling instead of unshielded twisted-pair (UTP) cabling

Electromagnetic interference (EMI), also called radio-frequency interference (RFI) when in the radio frequency spectrum, is a disturbance generated by an external source that affects an electrical circuit by electromagnetic induction, electrostatic coupling, or conduction