To solve this problem, we need to understand the carbylamine test.$\newline$The carbylamine test is used to identify primary amines.$\newline$• Primary amines react with chloroform and alcoholic KOH to form isocyanides (carbylamines),$\newline$ which have a foul smell.$\newline$Let's analyze each option:$\newline$Option 1:$\newline$• The structure is an N-methyl aniline, which is a secondary amine.$\newline$