Answer :

To determine which material will displace a volume of water equal to its own volume, we need to understand the principle of displacement. According to Archimedes' principle, any object fully submerged in a fluid (in this case, water) will displace a volume of fluid equal to the volume of the object itself, regardless of the material of the object.

Here’s a detailed step-by-step explanation:

1. Complete Submersion:
- When an object is completely submerged in water, it pushes the water out of the way to make room for itself. This means the water that gets displaced has the same volume as the submerged part of the object.

2. Material Consideration:
- The principle of displacement doesn't depend on the type of material. Whether the object is made of wood, metal, plastic, or any other substance, if it is fully submerged, it will displace water equal to its volume.

3. Volume of Objects:
- The critical point is the volume of the object. The material's density or weight does not affect the volume of water displaced; it strictly depends on how much space the object occupies.

4. Conclusion:
- Therefore, any material, when fully submerged in water, will displace a volume of water equal to its own volume.

In conclusion, every material, as long as it is entirely submerged, will displace a volume of water equal to its own volume.