Earth's Thermosphere Is the

Earth's thermosphere is the

A) outermost atmospheric layer in which ultraviolet light from the Sun ionizes atoms.
B) intermediate atmospheric layer in which ultraviolet light from the Sun is absorbed by ozone (O₃) molecules.
C) region of the magnetosphere in which trapped high-energy charged particles spiral along magnetic field lines.
D) layer of molten iron and nickel below the mantle.