The correct IUPAC name of the complex 

$\left[\mathrm{Ag}{\left({\mathrm{H}}_2\mathrm{O}\right)}_2\right]\left[\mathrm{Ag}{\left(\mathrm{CN}\right)}_2\right]$ is

diaquasilver(I) dicyanidoargentate(I)

Here both Ag atoms are in +1 oxidation state. water is neutral ligand and cynide is negative ligand.

Hence option $3$ is correct.