When hoisting a ladder, a second rope should be attached to the bottom of the ladder to help control it as it is hoisted. What is this second rope called?

The correct term for the second rope used to help control a ladder as it is being hoisted is known as a tag line. This rope is essential because it allows for better control of the ladder's position, preventing it from swinging or turning unexpectedly during the hoisting process. Using a tag line ensures that firefighters can maintain better stability and directional control, which is vital for safety while working at heights.

A mooring line typically refers to a rope used to secure a vessel to a dock or another vessel, which does not relate to hoisting ladders. A halyard is a type of rope used in rigging for hoisting sails or flags, serving a different purpose entirely. A spring line is utilized in the context of docking and securing boats, helping to prevent a craft from moving sideways. Thus, while these other terms may represent important ropes in different contexts, they do not apply to the specific function of controlling a ladder being hoisted.