An ion ${\mathrm{M}}^{2+}$ forms the complexes.${\left.{\left[{\mathrm{M}}_2{\mathrm{H}}_2\mathrm{O}\right)}_6\right]}^{2+} {\left[\mathrm{M}(en{)}_3\right]}^{2+} {\left[{\mathrm{MBr}}_6\right]}^{4-}$ Match the complex with the appropriate colour respectively :

Since ${\left.{\left[{\mathrm{M}}_2{\mathrm{H}}_2\mathrm{O}\right)}_6\right]}^{2+}{\left[\mathrm{M}(\mathrm{en}{)}_3\right]}^{2+}$ and ${\left[{\mathrm{MBr}}_6\right]}^{4-}$absorbed  red, green, and orange color respectively. Hence the emitted colors are red, green, and blue.

Hence option B is correct.