Nitro benzene on reduction with Zinc and ${\mathrm{NH}}_4\mathrm{Cl}$ gives

•  When nitrobenzene reduces with the help of a zinc, this reaction is known as an electrolytic reaction, and it is done in the aqueous phase. The electrolyte is required to serve as the promoter. 

${\mathrm{NH}}_4\mathrm{Cl}$ is used as a promoter in this reaction.

Chemical reaction

Therefore, option D is correct.