What is a Conjugated System

Question

What is a conjugated system?
A) a pigment region where hydrogen atoms are covalently bonded to each other with alternating single and double bonds
B) a pigment region where oxygen atoms are covalently bonded to each other with alternating single and double bonds
C) a pigment region where carbon atoms are covalently bonded to each other with alternating single and double bonds
D) a pigment region where nitrogen atoms are covalently bonded to each other with alternating single and double bonds

Accepted Answer

A conjugated system refers to a structure where carbon atoms are covalently bonded to each other with alternating single and double bonds, allowing for delocalization of electrons across the system.