Which type of plate boundary would be most likely to lead to above-ground volcanic activity?

Convergent plate boundary most likely lead to above-ground volcanic activity.

Explanation:

At convergent plate boundary two or more tectonic plates collide, which causes one layer to slide beneath the other. Earth's gravity pulls the lower layer into the mantle. Oceanic plate can sink beneath the continental plate and vice versa. This process of subduction leads to above ground activities such as earthquakes and volcanic eruptions.