Which of the following components is an external passageway that connects an engine's fuel sytem to a cylinder head port?

The fuel lines connect to a fuel rail that is bolted onto engine. The fuel rail holds the fuel injectors that enter into the intake manifold. The fuel injectors then spray the fuel into the intake manifold by where it meets the cylinder head. On the intake stoke of the cylinder the fuel injector will spray allowing the mist of gas to pass into cylinder via the cylinder head intake port.