Question

Asthenosphere is ________.

• A. Part of mantle
• B. Part of crust
• C. Part of core
• D. Discontinuity between crust and mantle

Answer 1

The correct option is A Part of mantle

Asthenosphere, the zone of Earth's mantle lying beneath the lithosphere and believed to be much hotter and more fluid than the lithosphere. The asthenosphere extends from about 100 km (60 miles) to about 700 km (450 miles) below Earth's surface.

So, the correct answer is option A.