What's the name for the part of earth made of rock apex?

In which area will soil formation be greatest? a a steep slope in a warm,b wet climate a flat area in a warm,c wet climate a north-facing area on a steep slope a flat area in a cold, d wet climate description

What are the answers for the following questions?

Under which condition below would u expect a coarse-grained intrusive rock like diorite to form?