You should not lubricate which of the following after cleaning them?

After cleaning halyards, it is generally advised not to lubricate them. Halyards are the ropes or lines used to hoist equipment, such as ladders or flags, and they need to maintain a certain amount of friction to function effectively when raising and lowering loads. Lubricating halyards can create a slick surface, increasing the risk of equipment slippage which can lead to unsafe conditions during a fire operation or rescue scenario.

In contrast, guides, roof hooks, and pawls may require lubrication to function properly, as they have moving parts that can benefit from a lubricant to reduce friction and wear, ensuring they operate smoothly and reliably. Thus, maintaining the correct operational characteristics of halyards by refraining from lubrication is crucial for safety and effectiveness in firefighting tasks.