Final answer:
Loihi is the seamount among the options provided, which also include Kauai, Molokai, and Hawaii. It is an undersea mountain part of the Hawaiian island chain, resulting from volcanic activity due to the movement of the Pacific Plate over a geological hot spot. The correct answer is option C. Loihi
Step-by-step explanation:
The seamount in question is Loihi. Among the options provided, which include Kauai, Molokai, Loihi, and Hawaii, Loihi is known as an undersea mountain that is part of the Hawaiian island chain, but unlike the other options, it has not yet breached the ocean's surface to form an island.
The Hawaiian Islands have been formed over millions of years by volcanic eruptions caused by the Pacific Plate moving over a hot spot beneath the Earth's crust. Kauai, Molokai, and Hawaii are actual islands that have emerged above sea level, whereas Loihi remains submerged and thus is characterized as a seamount.
Considering the geography of the Hawaiian Islands and their formation through volcanic activity, it is clear that seamounts like Loihi, which have been formed through similar geological processes, play a significant role in understanding the Earth's volcanic and tectonic activities.