What is the term used for the eruptions that originate from the explosive eruption style of stratovolcanoes?

The term that accurately describes eruptions originating from the explosive eruption style of stratovolcanoes is "explosive eruptions." Stratovolcanoes, characterized by their steep profiles and layered structure, typically erupt with significant force due to the viscous nature of their magma, which can trap gases. When these gases are suddenly released, the pressure leads to violent explosions. This contrasts with other eruption styles that may involve less explosive activity, such as effusive eruptions where lava flows steadily rather than erupting violently.

While terms like phreatomagmatic refer specifically to eruptions that occur when magma interacts with water, resulting in steam explosions, the term "explosive eruptions" broadly encompasses the violent nature of stratovolcanic activity. The selection of "explosive eruptions" highlights the hallmark mechanism of these volcanoes, making it the most suitable choice in the context of the question. The other terms provided do not capture this specific eruptive behavior associated with stratovolcanoes.