Answer:
A hexagon with nothing drawn inside it does not represent Benzene.
Step-by-step explanation:
Below attached picture contains structures mentioned in given option.
Structure of Option-A is shown in Red Color.
Structure of Option-B is shown in Blue Color.
Structure of Option-C is shown in Green Color.
Structure of Option-D is shown in Orange Color.
Result:
Except Option-A, all structures represent Benzene. Option-A in fact shows the structure of Cyclohexane.