Answer: Option C
:
C
Option 1- $Z{n}^{2+}$ has no unpaired electrons, it is diamagnetic and thus, colorless.
Option 2- In co-ordination compound $[Co{F}_6{]}^{3-}$, $C{o}^{3+}$ has 4 unpaired electrons, thus, it is paramagnetic.
Option 3- Maximum oxidation state shown by Sc is +3.
Option 4- Zinc atom has completely filled d orbitals $\left(3d^{10}\right)$ in its ground state as well as in its oxidised state, hence it is not regarded as a transition element.