Question

4 which word best characterizes the lower mantle?
a scalding
b cool
c molten
d lukewarm

Explanation:

The lower mantle is under extreme pressure and high temperature, reaching 4,000-6,700°F (2,200-3,700°C). "Scalding" means extremely hot, which matches this. "Cool" and "Lukewarm" are incorrect as the lower mantle is not low-temperature. "Molten" is inaccurate because the intense pressure keeps the lower mantle solid (plastic-like solid, not liquid molten rock).

Answer:

A. Scalding