Answer:
H²0 is answer is H20 ok please
Oxidation state of Pb in PbO2 is +4.
Oxidation state of Pb in PbCl2 is +2.
Oxidation state of Pb in Pb2O is +1.
Oxidation state of Pb in Pb4O3 is +6/4.
Hence option A. PbO2 is correct.
Hope this helps, have a nice day!
Silver is Ag from the latin Argentum
Lead is Pb from the latin Plumbum
It shows mass is not created nor lost but re arranged