Look at the diagram. Which of these gives the best account of how the islands were formed?
(A) Magma rises over the hot spot and forms an island. The plate moves, and another island forms.
(B) There are many hot spots along the plate boundaries. Each one forms a single island.
(C) The plate boundaries collide and form many volcanoes along the plate boundaries.
(D) As magma heats up in the mantle, it flows along the lithosphere and forms many islands