c
\(ClC{H_2}C{H_2}OH\) is stronger acid than \(C{H_3}C{H_2}OH\) due to \(-\,I\) effect of \(Cl\).

\(Cl\, \leftarrow \,\mathop {C{H_2}C{H_2}OH}\limits_{Stronger\,\,acid}  \to \,\) \(\,Cl\,\leftarrow \,\underset{\begin{smallmatrix} 
 -ve\,\,charge\,\,on\,\,O \\ 
 dispersed\,\,hence 
 \\ 
 conjugate\,\,base,\,stable 
\end{smallmatrix}}{\mathop{C{{H}_{2}}C{{H}_{2}}{{O}^{-}}\,}}\,+\,{{H}^{+}}\)

\(\underset{Weaker \,\,acid}{\mathop{C{{H}_{3}}C{{H}_{2}}OH}}\,\,\to \underset{\begin{smallmatrix} 
 -\,\,ve\,\,charge\,\,\operatorname{int}ensified, \\ 
 \,\,\,\,\,\,\,\,hence\,\,conjugatte 
 \\ 
 \,\,\,\,\,\,\,\,base\,\,unstable 
\end{smallmatrix}}{\mathop{C{{H}_{3}}\to \,C{{H}_{2}}{{O}^{-}}\,+}}\,\,{{H}^{+}}\)