The newly discovered high temperature superconductors are?

Detailed Solution:

The correct answer is “Ceramic oxides ”.

The answer is: (3) ceramic oxides

Many recently discovered high-temperature superconductors are ceramic oxides. These materials are a class of compounds containing metallic elements and oxygen.

They can achieve superconductivity at temperatures much higher than traditional superconductors, although still requiring cryogenic temperatures (below -150°C).