Which pair correctly shows a layer and its general composition?

Correct answer: Continental crust granitic

The direct answer is option A: continental crust is generally granitic in composition. Earth’s crust is not uniform. Continental crust is usually lighter, thicker, and rich in silica and aluminium, so granite is its familiar representative rock. Oceanic crust is generally basaltic and denser. Option A is correct because it matches the continental crust with its broad school-level composition. Option B is wrong: NIFE, meaning nickel and iron, is associated mainly with the core, not the oceanic crust. Option C is wrong: SIAL, meaning silica and aluminium, is associated with the lighter crust, not the metallic inner core. Option D is wrong: the outer core is mainly molten iron and nickel, not granite. These are general descriptions, not claims that every small part has exactly one material. Memory cue: continental crust—granite; oceanic crust—basalt; core—NIFE.