<span>Sodium chloride is an example of an ionic compound. An ionic compound is composed of a positively charged cation and a negatively charged anion that are held together by their attractive forces. For table salt, Sodium chloride, Sodium is the cation and Chloride is the anion. </span>
Oil Coal and Natural Gas are the fossil fuels the USA has the most reserves of. Given that only one of them is on the answers Coal is the correct answer.