At absolute zero, Silicon acts asA. non-metalB. metalC. insulatorD. semiconductor

At absolute zero temperature (0 Kelvin or -273.15 degrees Celsius), silicon acts as a semiconductor. This is its behavior at very low temperatures where it has minimal thermal energy for electrons to move freely, and it behaves as an insulator. However, at room temperature and higher, silicon behaves as a semiconductor, meaning it can conduct electricity but not as effectively as a metal. The correct answer would be:

D. semiconductor