The correct response is:
B The mantle is hotter than the crust. The mantle is hotter than the crust.
To elaborate, the temperature of the Earth's mantle ranges from about 500 to 4,000 degrees Celsius, while the crust is generally much cooler, with temperatures ranging from around 0 degrees Celsius at the surface to about 1,000 degrees Celsius at the shallowest parts of the mantle. The core, on the other hand, is even hotter than the mantle, reaching temperatures of up to about 5,000 to 6,000 degrees Celsius.