The correct option is A −CCl3
−CCl3 is the meta directing group because chlorine is more electronegative than carbon. It pulls the elctron density towards itself and act as a deactivating group on benzene ring which gives generally meta substituents.
−OH,NH2 and CH3 increase the electron density on benzene ring. Hence these are activating group which gives ortho and para substituents.
Hence the correct option is a.