How does the oxidation number of an atom of Mn change in the reaction below?
4Mn2+(aq) + MnO2(aq) + 8H30+(aq) +
15H2P403 (aq) → 12H2O(l) +
5Mn(H2P40)}-(aq)

water and alcohols have similar properties because water molecules contain hydroxyl groups that can form hydrogen bonds with other water molecules and with alcohol molecules, and likewise alcohol molecules can form hydrogen bonds with other alcohol molecules as well as with water.

it is b that is the answer.