Final answer:
The volume of Hydrogen Peroxide may be reduced by diluting it with water.
Step-by-step explanation:
Hydrogen peroxide can be diluted to reduce its volume. The most commonly used substance for diluting hydrogen peroxide is water. When diluted, hydrogen peroxide can be used for various purposes such as disinfecting surfaces and bleaching hair. So, the correct option to reduce the volume of hydrogen peroxide is water (b).