Which from following functional groups has highest priority order for naming the poly functional compound?

Step-by-step solution

IUPAC nomenclature prioritizes functional groups to determine the principal group that governs the compound's suffix, with the hierarchy established as follows: Carboxylic acids (- COOH ) , sulfonic acids (- SO ₃ H ) , esters (- COOR ) , acid halides (- COX ) , amides (- CONH ₂) , nitriles (- CN ) , aldehydes (- CHO ) , ketones (> C = O ) , alcohols (- OH ) , phenols (hydroxybenzene), thiols (- SH ) , amines (- NH ₂) , ethers (- OR ) , alkenes (> C = C Evaluating the given functional groups: amide (- CONH ₂) has pr