Which one of the following is a metalloid ?

Metalloids, also known as semimetals, are elements that possess physical and chemical properties intermediate between metals and nonmetals. They are typically located along a zig-zag or 'stair-step' line on the periodic table. The six elements commonly recognized as metalloids are boron, silicon, germanium, arsenic, antimony, and tellurium. Germanium is specifically identified as a metalloid that is useful in semiconductors and electronic components due to its variable electrical conductivity. In contrast, iodine is a halogen and a nonmetal. Coke is a carbon-rich fuel derived from coal, and sugar (sucrose) is an organic carbohydrate compound. While carbon (the primary component of coke) can occasionally show borderline behavior in certain allotropes like graphite, it is generally classified as a nonmetal [1]. Therefore, germanium is the only standard metalloid among the options.

Sources

1. [1] https://en.wikipedia.org/wiki/Metalloid