Help pls answer this question which is the right answer

Why is earth's outer core hotter than earth’s oceanic crust? earth’s oceanic crust is denser than earth’s outer core is. earth’s oceanic crust has lava flowing from the mantle. earth’s outer core has a composition of solid iron and nickel. earth’s outer core is deeper within earth than oceanic crust is.

Which individual below would be considered heterozygous? a.dd b.dd c.dd

Can someone me answer this question? you