Explanation:
(d)Presence of \(-I\) effect chlorine atom increases the acidic nature by withdrawing electrons
\(\mathop {C{l_3}CCOOH}\limits_{trichloro{\mkern 1mu} \,\,acetic\,\,\,acid(Most{\mkern 1mu} \,\,acidic)} > \) \(\mathop {C{l_2}CHCOOH}\limits_{dichloro\,\,{\kern 1pt} acetic\,{\kern 1pt} acid} > \) \(Cl - C{H_2} - COOH > \) \(C{H_3}COOH\)