Pour 4 mL of hydrogen peroxide into a clean test tube and obtain a small amount of manganese dioxide. (Manganese dioxide is a catalyst, something used to increase the speed of a reaction but is not used up or
produced in the reaction.)

the answer would be a

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.