Question

a substance composed of two or more elements chemically bonded together. examples are h₂o and co₂. element electron cloud compound metalloid

Explanation:

A compound is defined as a substance made up of two or more elements that are chemically bonded. Examples like $H_2O$ (water) and $CO_2$ (carbon - dioxide) fit this definition. Elements are pure substances made of only one type of atom. The electron - cloud is the region around the nucleus of an atom where electrons are likely to be found. Metalloids have properties intermediate between metals and non - metals.

Answer:

C. Compound