Final answer:
The false statement about Maunaloa is that it is the world's best example of a volcano in a post-shield stage. Maunaloa is an active shield volcano, not a post-shield volcano, and the other statements about it being the Hawaii Island's second-most active volcano, the world's largest active volcano, and one of the world's tallest mountains from the sea floor are true.
Step-by-step explanation:
The student has asked which of the following statements is not true for Maunaloa:
- Hawai'i Island's second-most active volcano
- The world's best example of a volcano in a post-shield stage
- The world's largest (in size/volume) active volcano
- One of the world's tallest mountains if measured from the base on the sea floor
In response to this question, the false statement regarding Maunaloa is B. The world's best example of a volcano in a post-shield stage. This is because Maunaloa is actually an example of a shield volcano, which is characterized by its broad, gently sloping sides formed from the eruption of low-viscosity lava that can flow great distances. In contrast, Maunaloa is not in a post-shield stage; it is actually one of the most active shield volcanoes.
The other statements, A, C, and D, are indeed true. Maunaloa is Hawai'i Island's second-most active volcano after Kilauea, it is the world's largest active volcano by volume, and it is one of the world's tallest mountains when measured from its base on the sea floor.