What function do falls serve in hoisting and lowering operations?

The function of falls in hoisting and lowering operations primarily involves providing support and stability during those processes. Falls, which are typically ropes or cables, are designed to manage the weight of the load being lifted or lowered, ensuring that it remains secure throughout the operation.

When a boat is being hoisted or lowered, the falls help to distribute the weight effectively and minimize the risk of sudden shifts or drops. This function is critical for maintaining safety and control during the operation. The other choices, while they may involve elements of the hoisting setup, do not accurately capture the primary role that falls play in managing the load itself. Thus, the correct answer reflects the essential nature of falls in supporting the weight during these procedures.