Final answer:
NaCl is the compound that is a salt, which is an ionic compound consisting of sodium ions and chloride ions.
Step-by-step explanation:
Among the compounds listed, NaCl is a salt. Salts are ionic compounds formed by the neutralization reaction between an acid and a base. Specifically, NaCl, also known as sodium chloride, is composed of sodium ions (Na+) and chloride ions (Cl−). It is commonly referred to as table salt and is used in various applications, including food seasoning and preservation.