What are some notable geologic features found on the surface of Earth?

The correct answer highlights notable geologic features that are directly associated with the processes of plate tectonics and the resulting geological formations. Undersea trenches are deep depressions in the ocean floor formed by the subduction of one tectonic plate beneath another. Intricate coastlines can result from the interplay of erosion and sedimentation, often influenced by tectonic activity. Beautiful valleys can be shaped by tectonic movements leading to the uplift or subsidence of land. Dramatic mountains, such as those formed by the collision of tectonic plates, are prominent examples of Earth's dynamic crust.

While the other options list surface features, they include elements that are not all directly related to geological processes in the same way. Volcanic islands and geysers in the second option are linked to tectonic activity but are not as comprehensive in terms of varied geologic features. The third option lists more ecological features, which, while important, do not primarily describe geological processes. The fourth option mentions a mix of geographic and elevation features, but again lacks the direct association with plate tectonic activity that characterizes the correct choice.