Each year as the weather gets cold, gray whales swim over 10,000 miles from arctic waters south to coastal areas of northern Mexico. After their young are born, they return to the Arctic. The whales are responding to an stimulus. This response is an example of . PLEASE HELP ASAP

Ithink the correct answer is a

Magma forms by partial melting of upper mantle and crust. partial melt means that only a fraction of the available material forms a melt, and that the remainder stays solid. the partial melt rises because of its lower density and ascends through he crust. this is so conclusive mean the answer would be magma igneous rocks or balistic magma.