what occurs during the reaction below

4Hcl+MnO2-->MnCl2+2H2O+Cl2
1.the manganese is reduced and its oxidation number changes from +4 to +2.
2.the manganese is oxidized and its oxidation number changes from +4 to +2.
3.the manganese is reduced and its oxidation number changes from +2 to +4.
4. the manganese is oxidized and its oxidation number changes from +2 to +4.
dont understand please help

3 answers

I hardly now how to help without giving you the answer.
Remember the definitions.
Loss of electrons is oxidn.
Gain of electrons is redn.
So for #1, does Mn go from +4 to +2? and Is that an oxidn or a redn. Do the other possibilities the same way.

answer is 1

i also agree