The majority of the periodic table is comprised of elements that are classified as what?

The majority of the periodic table is comprised of metals, which is why this choice is correct. Metals are characterized by their ability to conduct electricity and heat, malleability, ductility, and typically have a shiny appearance. They occupy a large portion of the periodic table, primarily located on the left side and in the center.

In contrast, non-metals are found on the right side of the periodic table and generally exhibit opposite properties to metals, such as poor conductivity and a lack of luster. Metalloids, which have properties intermediate between metals and non-metals, occupy a stair-step region between these two categories but comprise far fewer elements than the metals. Noble gases, located in group 18, are also a small subset of the periodic table, known for their lack of reactivity, and consist of only a handful of elements. Therefore, it is clear that metals dominate the structure of the periodic table.