What is the name of the largest volcano on Mars?

The largest volcano on Mars is known as Olympus Mons. This colossal shield volcano is not only the tallest volcano on Mars but also the tallest planetary mountain in the solar system, reaching about 13.6 miles (22 kilometers) in height, which is nearly three times the height of Mount Everest. Olympus Mons has a diameter of approximately 370 miles (600 kilometers), which is about the same size as the state of Arizona. Its immense size is due to the low gravity on Mars and the lack of tectonic plate movement, allowing lava to flow for extended periods and build up over time without being disrupted. The other options listed do not pertain to Mars; for instance, Mount Everest is located on Earth, whereas Mauna Loa is a volcano in Hawaii, and Mount Olympus can refer to a mountain on Earth or is sometimes confused with Mars but is not an official name for a Martian volcano.