Statement-I: Aniline is more stable than anilinium ion.

Statement-II: The proton acceptability nature of aniline is less than that of ammonia.

In basic media, it means there will be an attack by a proton and the aniline is protonated to an anilinium ion.

$\underset{\mathrm{aniline}}{{\mathrm{C}}_6{\mathrm{H}}_5-{\mathrm{NH}}_2}+\mathrm{protonation}-------\to \underset{\mathrm{anilinium} \mathrm{ion}}{{\mathrm{C}}_6{\mathrm{H}}_5{{\mathrm{NH}}_3}^{+}}$

Anilinium ion, due to the positive charge on it, shows an -I effect, so it will not remain like O and P-directed towards strong acid. It will behave as meta-directing as the -I effect is more on ortho(O) and para (P) positions and less on meta positions, so when an electrophile attacks, it attacks faster on meta - position.