See image — IUPAC and Nomenclature Chemistry Question

💡 Solution & Explanation

Correct option: \(\text{A}\). The correct choice is \(\text{A}\), S. Applying the standard IUPAC sequence-parent selection, lowest locants, principal functional group priority, and alphabetical substituent ordering-selects the marked option. Recovered question text: 15. Which of the following is a heterocyclic compound HC=CH HC=COOH HC=CH HC=CH (A) S (B) (C) CH (D) C=O 2 HC=CH HC=COOH HC=CH HC=CH