Total number of aromatic compounds from below is

According to the Huckle's rule,

The compound is aromatic which is planar and has the $\left(4\mathrm{n}+2\right)\mathrm{\pi }$ electrons. The compound is aromatic in nature because it is a planar compound with $\left(4\mathrm{n}+2\right)\mathrm{\pi }$ electrons. Aniline, naphthalene and pyridine are aromatic compounds.

Compounds :-

Hence, the three compounds are aromatic in nature.