Copper was chosen because it can be drawn into long thin wires very easily (it is ductile) and because it is a good conductor of electricity.
(Copper; was chosen; because it can be drawn into long thin wires very easily (it is ductile) and because it is a good conductor of electricity) (it; can be drawn very easily; ) (it; is; ductile) (it; is; a good conductor of electricity)
Copper it it it
was chosen can be drawn very easily is is
because it can be drawn into long thin wires very easily (it is ductile) and because it is a good conductor of electricity
ductile
a good conductor of electricity