Answer the following question given this paragraph: 

Some volcanic eruptions are non-explosive ( Figure below ). This happens when there is little or no gas. The lava is thin, fluid and runny. It flows over the ground like a river. People generally have a lot of warning before a lava flow like this reaches them, so non-explosive eruptions are much less deadly. They may still be destructive to property, though. Even when we know that a lava flow is approaching, there are few ways of stopping it!.


Q: What kind of volcanic eruptions are less deadly?

 Choices:

- non-dormant

- serial eruptions

- explosive

- non-explosive

A:
non-explosive
