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

Answer;

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

Explanation;Metalloids are chemical  elements which have properties in amid those nonmetals or metals, or that has a combination of them. In other words their properties are intermediate of those of both metals and non metals.Metalloids includes; silicon, germanium, tellurium, arsenic, antimony, boron and polonium.These elements are solid at room temperatures, they can also form alloys with other metals and some act as electrical conductors and are therefore called semiconductors, and are used to make diodes.