The following are media or materials that can be used to extinguish fires Seawater, Oxygen, Ferrous, Carbonate Water, Carbon Monoxide, Fertilizer, Halon Gas, Wet Sack Water, Oxygen, Chemical Powder, Avtur Water, Carbon dioxide Gas, Dry Chemical Powder, Halon Gas, Foam Saya Tidak Tahu.

4

1. Seawater can be used to extinguish fires, but Oxygen accelerates combustion and is not used to extinguish fires. Ferrous is a type of metal and is not used to extinguish fires. Carbonate is a type of salt and is not typically used to extinguish fires.2. Water is a common fire extinguishing agent. Carbon Monoxide is a toxic gas and is not used to extinguish fires. Fertilizer can be flammable and is not used to extinguish fires. Halon Gas is used in fire extinguishers, especially for electrical fires. Wet Sack can be used to smother small fires.3. Water is a common fire extinguishing agent. Oxygen accelerates combustion and is not used to extinguish fires. Chemical Powder can be used in fire extinguishers. Avtur is a type of jet fuel and is flammable.4. Water is a common fire extinguishing agent. Carbon dioxide Gas is used in fire extinguishers to displace oxygen and smother the fire. Dry Chemical Powder is used in fire extinguishers for various types of fires. Halon Gas is used in fire extinguishers, especially for electrical fires. Foam is used to smother fires, especially liquid fires.5. "Saya Tidak Tahu" translates to "I don't know" in English.Based on the given options, the fourth set of materials contains the most agents that are commonly used to extinguish fires.