when metals, nonmetals, and metalloids are compared according to luster, which is the best description of the appearance of metalloids? A. dull B. Powdery C. Shiny D. Either shiny or dull

D they are both because they can be both metals and no metals

Explanation:

supercell thunderstorms are perhaps the most violent of all thunderstorm types, and are capable of producing damaging winds, large hail, and weak-to-violent tornadoes