Final answer:
The steep cliffs on an island are typically the most dangerous due to the high risk of falls and rockslides, making them areas that should be approached with caution or avoided altogether.
Step-by-step explanation:
From the information provided and common sense about natural landscapes, the most dangerous site on the island seems to be the steep cliffs.
These areas often pose significant risks due to their precipitous drops, potential for rockfalls, and the challenges they present to safe navigation. With this in mind, it would be wise for anyone on the island to approach these areas with caution, if at all.
In contrast, the tranquil beach, the lush forest, and the open meadow typically pose less immediate physical danger, although they could have their own risks depending on the specific circumstances on the island such as wildlife, forest fires, or other environmental hazards.