What happens at a convergent boundary?A.Magma rises from the mantle.B.Crust is destroyed.C.A guyot forms.D.New crust is created.

At a convergent boundary, several things happen:

A. Magma rises from the mantle: This is true. As the tectonic plates collide, one plate is often forced beneath the other in a process known as subduction. As the subducting plate sinks into the mantle, it is subjected to intense heat and pressure which causes it to melt and form magma. This magma can rise to the surface and lead to volcanic activity.

B. Crust is destroyed: This is also true. The process of subduction at a convergent boundary leads to the destruction of the crust of the subducting plate.

C. A guyot forms: This is not typically associated with convergent boundaries. A guyot, or a flat-topped seamount, usually forms in the open ocean, often as a result of volcanic activity. Over time, the top of the seamount is eroded flat by wave action. This is more associated with divergent or transform boundaries, not convergent ones.

D. New crust is created: This is generally false for convergent boundaries. New crust is typically created at divergent boundaries, where tectonic plates are moving apart and magma rises to fill the gap. At convergent boundaries, the crust is typically being destroyed rather than created. However, in some cases, the magma that rises from the subducting plate can cool and solidify on the surface, adding new material to the crust. But this is not the same as the creation of new crust at divergent boundaries.