Outer layer of the earth is called:

Correct option is C

Correct Answer: (C) Crust
Explanation:
→ The outermost layer of the Earth is called the crust, which forms the Earth’s surface including continents and ocean basins.
→ It is a thin, rigid layer composed mainly of igneous, sedimentary, and metamorphic rocks.
→ The crust is divided into continental crust (thicker and less dense) and oceanic crust (thinner and denser).
→ Beneath the crust lies the mantle, which is hot and semi-solid, and forms the lithosphere along with the crust.
Information Booster:
→ Crust forms the Earth’s outer layer, supporting landforms, soil, and human activities.
→ Thickness: 5–70 km (oceanic crust: 5–10 km, continental crust: 30–70 km).
→ Made up of igneous, sedimentary, and metamorphic rocks.
→ Divided into continental and oceanic crust.
→ Part of the lithosphere, which includes the crust and upper mantle.
→ Supports ecosystems, mountains, valleys, and human settlements.
→ Plays a key role in plate tectonics and geological processes.
Additional Information (Other Options):
Option (A) Hydrosphere – Comprises all water on Earth.
Option (B) Troposphere – Lowest layer of the atmosphere.
Option (D) Lithosphere – Includes crust and uppermost mantle, not just the outer layer.