The equilibria of NH3 in water will be
NH3 + H2O ⇌ NH4+ (aq.) + OH– (aq.)
(A) If HCl is added it will furnish H+ and Cl– ions as it is a strong electrolyte. Now H+ will form H2O with OH– ions (neutralisation) so [NH3] will decrease, [NH4+] and [OH–] increase since equilibria will shift in forward direction.
(B) If more NH3 is added, then [NH3], [NH4+] and [OH–] will increase.
(C) If NaOH is added it will furnish [Na+] and [OH–] ions since it is a strong electrolyte and [OH–] will suppress the ionisation of weak base NH3 so [NH3] increases, [NH4+] decreases and [OH–] increases.
(D) NH4Cl will also apply common ion effect on NH4OH but now [NH3] increases, [NH4+] increases but [OH–] decreases.
(E) NO effect expected