The correct answer is (b) at intraplate hot spots.
Volcanoes occur at different place on the Earth and there are many reasons behind the occurrence of volcanoes at different-different places. They most often occur at plate boundaries and at intraplate hot spots. The volcanoes that occur at intraplate hot spots are called as intraplate or hot spot volcanisms. They occur as a result of mantle plumes. Mantle plumes are bodies of warmer and lighter material which is present in mantle which rises as a result of convection.
