$\begin{array}{1 1}\text{(a) Chlorine act as o, p directing group because of resonance.}\\\text{(b) Chlorine act as o, p directing group due to the presence of lone pair of protons .}\\\text{(c) Chlorine act as o, p directing group because of sp hybridization.}\\\text{(d) Chlorine act as o, p directing group because of inductive effect}\end{array} $