The correct option is A Fe3+(aq)+3OH−(aq)⟶Fe(OH)3(s)
FeCl3(aq)+3NaOH(aq)⟶Fe(OH)3(s)+3NaCl(aq)
In this reaction, NaCl is a strong electrolyte so, it exists as ions and the reaction that happens in solution is :
Fe+3+3Cl−+3Na++3OH−(aq)⟶Fe(OH)3(s)+3Na++3Cl−(aq)
Fe3+(aq)+3OH−(aq)⟶Fe(OH)3(s)