Question

between sulphur and copper which one you will use for making wires

Answer 1

copper as it is a better conductor of electricity
hope this helps<3

Answer 2

By burying the copper wire with plenty of sulphur and then heating the mix, the wire becomes completely submerged in liquid sulphur. The liquid sulphur then gets to react with the copper, and any oxygen that could possibly oxidise the copper would have to diffuse into the liquid sulphur before reaching the copper. However, oxygen quickly reacts with heated sulphur forming sulphur oxides, so it never reaches the copper wire. This is all under ideal conditions, of course.