Which of the following is a dormant volcano in Hawaii?

Mauna Kea is classified as a dormant volcano, which means it has not erupted in a significant amount of time but could potentially erupt again in the future. It last erupted about 4,500 years ago, indicating its lack of recent activity, which is a primary characteristic of a dormant volcano.

In contrast, Kilauea is an active volcano known for its frequent eruptions and continuous activity over recent decades. Mauna Loa is also classified as an active volcano, with its most recent eruption occurring in 2022. Loihi, while not currently active in terms of eruptions, is classified as an underwater volcano that is still in the formative stages of developing into a potential landmass and does not fit the traditional definition of dormant. Thus, Mauna Kea stands out as the dormant option due to its long period of inactivity.