Final answer:
The Aleutian Islands are an example of an island arc, created by tectonic plate subduction in the Ring of Fire zone of the Pacific Ocean, distinguishing them from other options like the Hawaiian Islands and Iceland.
Step-by-step explanation:
The feature known as an island arc is typically formed due to earthquake and volcanic eruptions associated with tectonic plate boundaries where one plate subducts beneath another. In the given options, the Aleutian Islands represent an island arc. They are part of the Ring of Fire, which is a zone around the rim of the Pacific Ocean marked by frequent seismic and volcanic activity. This process of subduction has resulted in the creation of the Aleutian Islands. On the other hand, the Hawaiian Islands are a product of volcanic activity above a stationary hotspot, and Iceland is situated over a mid-ocean ridge where tectonic plates are diverging.