c
(c) \(\mathop {C{H_3} - \mathop {\mathop {CH}\limits_{|\,\,\,\,\,} }\limits_{OH} - C{H_2} - C{H_3}}\limits_{2 - {\text{Butanol}}} \mathop {\xrightarrow{{KMn{O_4}}}}\limits_{{\text{Oxidation}}} \mathop {C{H_3} - \mathop {\mathop C\limits^{||} }\limits^O - C{H_2}C{H_3}}\limits_{{\text{ethyl methyl ketone}}} \)