Which of the following material adopts an amorphous structure?Group of answer choicesAlumina.Copper.Glass.Zirconium oxide.

The material that adopts an amorphous structure from the given options is Glass.

Here's why:

1. Alumina: Alumina, or Aluminum Oxide (Al2O3), is a crystalline material known for its hardness and strength. It does not have an amorphous structure.

2. Copper: Copper is a metal and has a crystalline structure. Atoms in metals and alloys are arranged in a regular, repeating pattern that is not amorphous.

3. Glass: Glass is an amorphous material. This means it has a structure that is not regularly repeating or ordered, which is a characteristic of crystalline materials. Instead, its atoms are arranged randomly.

4. Zirconium oxide: Zirconium oxide, also known as zirconia, is a crystalline material. It is not amorphous.

So, the correct answer is Glass.