Select the correct answer. which statement about earth's layers is true? a. they all consist of liquid rock. b. they each vary in size and temperature. c. they are all under an equal amount of pressure. d. they will soon combine, forming a single, thick layer.

b, they are various materials each of which are different temperatures and size.

you have the 3 main ones for instance, crust, mantle, core.

the crust is a solid rock layer composed of different kinds of both organic and non organic materials.

the mantle is made of semi liquid rock, which is magma under ground and lava above ground.

then you have the core which is dense liquid nickle and iron.