Question

how do the plates and mantle interact at this type of plate boundary? the plate sinks into the mantle mantle material fills the gaps between the plates the plate sinks into the mantle mantle material fills the gaps between the plates

Explanation:

At convergent plate boundaries, one plate sinks into the mantle (subduction). At divergent plate boundaries, mantle material rises to fill the gaps between the separating plates.

Answer:

If it's a convergent plate boundary: The plate sinks into the mantle. If it's a divergent plate boundary: Mantle material fills the gaps between the plates.