Answer:
A. Wires
Step-by-step explanation:
Electrical conductivity is basically how much electrical current a type of material can carry through it, so in other words it is the rate electric current can pass through it.
As you know, electrical devices rely on electricity (it's in the name) for it to function. Wires are often used in electrical equipment. Wires help connect devices to power sources. They need to be good electrical conductors in order to deliver electricity to the devices and powering it on.