If you are able to say that one rock is older or younger than another or one fossil is older or younger than another, what type of age are you using?

I’m sorry i don’t know the answer

Answer b is the answet

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.