Which other material if replaced with the nail would help the bulb glo

1.	Which other material if replaced with the nail would help the bulb glow?(a) Paper clip(b)Plastic pipe(c)Cotton string(d)Piece of cardboard
Answer» ANSWER: (C) OPTION is your answer.

Which other material if replaced with the nail would help the bulb glow?(a) Paper clip(b)Plastic pipe(c)Cotton string(d)Piece of cardboard

Answer»