A) Mauna Loa
B) Mauna Kea
C) Mount Etna
D) None of these
The answer depends on how you define “largest volcano.”
- By volume and mass, the answer is: A) Mauna Loa [USGS volcano Mauna Loa]
However, there’s a twist:
- By footprint (area covered), the answer is: D) None of these
There’s an extinct volcano called Tamu Massif that’s technically larger in area than Mauna Loa, but it’s underwater.