The classification of rocks into three major categories is based on

On their mode of formation

Explanation:

The classification of rocks into three major categories is strictly based on their mode of formation.

Rocks are naturally formed aggregates of minerals. Based on mode of formation, they can be classified into;

Igneous rocks: these rocks are formed by the cooling and solidification of molten magma. Sedimentary rocks are formed by the compaction and lithification of sediment. Metamorphic rocks: these are changed rocks that have been formed by subjecting rocks to pressure and temperature conditions which causes an alteration of their minerology.

I  cant see the question.

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.