Answer:
КОН
Step-by-step explanation:
Potassium hydroxide -
It is an inorganic compound and commonly known as the caustic potash , with molecular formula of KOH .
It is highly soluble in water , and dissociates into its respective ions in water , i.e. , K⁺ and OH⁻
Potassium hydroxide is a very strong base and a colorless solid .
Hence , from the given compound , KOH , is the strongest base among all .