c
\(\mathrm{X} \frac{\mathrm{LiAlH}_{4}}{\text { Reduction }} \mathrm{C}_{2} \mathrm{H}_{7} \mathrm{N}(\) Amine \(=\mathrm{Y})\)

\(\mathrm{X}\) is \(\mathrm{CH}_{3}-\mathrm{C} \equiv \mathrm{N}\) (Cyanomethane)

\(\mathrm{X} \stackrel{\mathrm{H}}{\longrightarrow} \mathrm{Z}\)

\(\mathrm{CH}_{3}-\mathrm{C} \equiv \mathrm{N} \stackrel{\mathrm{H}}{\longrightarrow} \mathrm{CH}_{3} \mathrm{COOH}\)

\(\mathrm{Z}=\mathrm{CH}_{3} \mathrm{COOH}\)

Product after mixing \(\mathrm{Y}\) and \(\mathrm{Z}\) is \(\left(\mathrm{CH}_{3} \mathrm{COO}^{-}\right)+\left(\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{NH}_{3}^{+}\right)\) (Substituted Ammonium Carboxylate Salt)