d
\((d)\)  \((a)\) \(\begin{array}{*{20}{c}}
  {O\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
  {||\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,} \\ 
  {H - C - Cl \to \,CO\, + \,HCl} 
\end{array}\)

\((b)\) \(C{H_3}CON{H_2}\,\xrightarrow{{HCl}}\,C{H_3}CO\mathop N\limits^ +  {H_3}C{l^ - }\)

\((c)\) \(C{H_3}CON{H_2}\) \(\xrightarrow[{or\,\,Na/{C_2}{H_5}OH}]{{LiAl{H_4}}}\) \(C{H_3}C{H_2}N{H_2} + {H_2}O\)

Thus all the three are correct.