What is a potential hazard when using a ladder on a slope?

Using a ladder on a slope presents a significant hazard primarily because it increases the risk of slipping or the ladder rolling away. When a ladder is placed on an incline, the gravitational pull can cause the ladder to slide or shift, especially if the ground is uneven, soft, or slippery. This instability poses a serious safety concern for anyone using the ladder, as it can lead to falls or injuries when climbing or descending.

In contrast, increased stability and secure footing, reduced need for balancing techniques, and improved reach and access to higher places may not apply when using a ladder on a slope. The incline inherently complicates these factors rather than enhancing them, thus making it essential to recognize and mitigate the risks involved in such situations.