Explanation

(d)
$CH_{3}CONH_{2} + NaOH \longrightarrow CH_{3}COONa + NH_{3}$
$\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ (A)$
$\left( C_{2}H_{5} \right)_{2}CO_{3} + 2NH_{3} \rightarrow NH_{2}CONH_{2} + 2C_{2}H_{5}OH$
ethyl carbonate urea
$NH_{2}COOC_{2}H_{5} + NH_{3} \rightarrow NH_{2}CONH_{2} + {2C}_{2}H_{5}OH$
Ethyl urethane urea
$COCl_{2} + 2NH_{3} \rightarrow NH_{2}CONH_{2} + 2HCl$
phosgene urea