Final answer:
The most effective fire extinguisher for wood, paper, and flammable liquids would be a Type ABC extinguisher, covering multiple fire classes. However, given the options, Type A would be needed for wood and paper, and Type B for flammable liquids, although such a combined option was not provided.
Step-by-step explanation:
When fighting a fire where wood, paper, and flammable liquids are burning, the most effective type of fire extinguisher would be Type ABC extinguisher. This is because it is multipurpose and can handle different types of fires: Type A for ordinary combustibles like wood and paper, Type B for flammable liquids, and Type C for electrical fires (though the latter is not specified in the question, an ABC extinguisher is still the best choice for broad coverage). However, if you have to choose between the options provided (A, B, C, D), the best option would be Type A for the wood and paper and Type B for the flammable liquids. Since both A and B types are needed, and none of the choices provided cover both, the question seems to lack a completely correct option or assumes availability of both types individually. It is important to use the correct type of extinguisher to effectively combat the fire and ensure safety.