Final answer:
Submarine volcanoes typically have less explosive eruptions due to the high pressure of overlying water, resulting in passive lava flows and fewer destructive impacts on the ocean surface.
Step-by-step explanation:
The paragraph you provided suggests that due to the high pressure caused by the weight of the overlying water, submarine volcanoes are less likely to have explosive eruptions when compared to their terrestrial counterparts. Instead, they typically produce what is known as passive lava flows, which spread along the seafloor.
Considering this information, the best-supported conclusion is that few submarine eruptions have a destructive impact on the ocean surface. While this does not mean that submarine eruptions cannot alter the seafloor landscape or that they are always non-explosive, it does imply that their eruptions are not typically characterized by the same level of explosiveness or potential for widespread destruction as those of land-based volcanoes.