Final answer:
A salt is a compound formed from the reaction between an acid and a base. KCI is potassium chloride, which is a salt formed from the reaction between potassium hydroxide and hydrochloric acid.
Step-by-step explanation:
A salt is a compound formed from the reaction between an acid and a base. It is composed of a cation from a base and an anion from an acid. Among the options given, KCI is the correct answer because it is potassium chloride, which is formed from the reaction between the base potassium hydroxide (KOH) and the acid hydrochloric acid (HCl).
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