Which of the following clothing items is suitable for use when handling fuel?

When handling fuel, it is crucial to wear appropriate clothing to minimize the risk of fire and injury. None of the clothing items listed are considered suitable for this task, which is why "none of the above" is the correct choice.

Nylon clothing is not recommended because it is synthetic and can melt when exposed to high heat or flames, potentially causing severe burns. Wool, while it has some natural fire-resistant properties, can still ignite and burn under certain conditions; thus it is not the safest option for fuel handling. Cotton, although breathable and comfortable, can easily catch fire and burn quickly, which could pose a serious risk when working with flammable materials like fuel.

When handling fuel, the safest clothing would typically include flame-resistant garments made from materials specifically designed to withstand high temperatures and resist ignition. These types of clothing help protect workers from potential fires or explosive hazards that may arise in environments involving flammable substances.