Correct Answer - C
Aniline is weaker base than ammonium chloride. In `NH_4Cl` or aliphatic amines, the non-bonding electron pair of N is localized and is fully available for coordination with a proton.
`CH_6H_5NH_3^(c+)toC_6H_5NH_2+H^(+)`
On the other hand, in aniline and other aromatic amines, the non-bonding electron pair is delocalised into benzene ring by resonance.
But anilinium ion is less resonance stabilised than aniline.