SOLUTION

The most suitable fire extinguisher for extinguishing a fire caused by cotton or other cloth is Water.

• Class A Fires: Fires involving ordinary combustibles such as wood, paper, and textiles (including cotton) fall under Class A. Water is an effective extinguishing agent for these types of fires as it cools the burning material and prevents re-ignition.
• Water: Water is one of the most common and effective fire extinguishers, especially for fires involving ordinary combustibles like wood, paper, and cloth. Water cools the fire and extinguishes it by removing heat from the burning material. It’s also inexpensive and readily available.

Why the other options are less suitable:

• Dry chemicals: Dry chemical fire extinguishers are effective on various types of fires (Class A, B, and C), but water is a more effective and cheaper option for cloth fires. Dry chemicals can also leave a residue that can be difficult to clean up in some situations.

• Foam: Foam fire extinguishers are primarily used for fires involving flammable liquids (like oil and gasoline). They are not as effective on cloth fires as water.

• Soda acid: Soda acid fire extinguishers are no longer in common use and have been replaced by more modern extinguishers. They are not as effective as water for cloth fires.