The correct option is
D ![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/1087920/original_7d.PNG)
For a compound to be aromatic,
(i) It should be cyclic
(ii) It should be planar
(iii) It should have extended conjugation
(iv) It should have (4n+2)
π electrons
Lacking any one of the above requirement, the compound cannot be an aromatic.
Compound (a) and (b) have 8
π electrons so they are not aromatic.
Compound (c) has 8
π electrons. Hence, it is antiaromatic in nature.
![](https://df0b18phdhzpx.cloudfront.net/ckeditor_assets/pictures/1358858/original_8-9-21_7.png)
Compound (d) obeys all the rules with 6
π electrons. Hence, it is an aromatic compound.