The correct option is A Sailor
Blacksmith is an artist who forges iron to make goods.
A goldsmith moulds the shape of gold into jewellery.
Tailor weaves cloth.
Sailor is necessary for working aboard a ship.
Carpenter saws and chisels and makes things out of wood.
Hence blacksmith, goldsmith, tailor and carpenter work with materials.
A sailor is responsible for duties aboard a ship. He is the odd man out.