What is the general rule for ladder placement on uneven ground?

Using ladder leveling devices or ensuring that the ladder is placed on a stable surface is critical for maintaining safety when using ladders on uneven ground. Uneven surfaces can lead to instability, making the ladder prone to tipping or sliding, which increases the risk of falls and accidents. Leveling devices help to adjust the ladder's feet so that it stands securely, thus preventing any movement during use. Ensuring stability can significantly reduce the danger associated with using a ladder in such conditions.

The other options may imply practices that do not adequately ensure safety. For example, placing a ladder on any surface does not take into account the potential hazards associated with uneven ground. Simply checking for wobbly conditions without employing leveling devices may not provide sufficient safety measures, and positioning against a wall does not address the need for a stable foundation, particularly on uneven terrain. Therefore, the best practice for ladder placement on uneven ground involves the use of ladder leveling devices or ensuring it rests on a stable, level surface.