Which lists only metalloids? arsenic (as), sulfur (s), and polonium (po) antimony (sb), tellurium (te), and gallium (ga) boron (b), germanium (ge), and tellurium (te) polonium (po), aluminum (al), and silicon (si)

A metalloid is any chemical element which has properties in amid those nonmetals or metals, or that has a combination of them. In the choices given above, all of them are metalloids but these three are the commonly recognized as metalloids:

Boron

Germanium

Tellurium

Boron (B), germanium (Ge), and tellurium (Te)

its c its is a mixture of gases

another example of kinetic energy would be,

kinetic energy   >     moving energy

answer   >   letter choice (c),   a hammer falling off a table.

hope that !                                         : )