Among the following oxides, which one is weakly basic and yet a...

For the dioxides of group- 14 elements (\left(\mathrm{CO}}_{2}, \mathrm{SiO}}_{2}, \mathrm{GeO}}_{2}\right.) and (\left.\mathrm{PbO}}_{2}\right),\mathrm{PbO}}_{2}) is most basic in nature. Again, in oxidation state ($\mathrm{Pb}$) in +4 , which is less (\mathrm{PbO}}_{2}) stable than its +2 state because of inert pair effect. So, ($\mathrm{Pb}^{4+}$) of (\mathrm{PbO}}_{2}) has a tendency to be reduced into more stable (\mathrm{Pb}^{2+}) (PbO) showing strong oxidising nature of (\mathrm{PbO}}_{2}).