Question

Lithosphere consists of?
1. Crust
2. Upper part of mantle
3. Both 1 and 2
4. Crust and asthenosphere

Answer 1

Hint:
Lithosphere literally means a layer composed of hard rock.
It is the upper layer of soil profile which is also the region where life can exist.
In addition it goes way deeper than just the uppermost layer.

Complete answer:
Lithosphere:
The strong, outer portion of the Planet is the lithosphere. The lithosphere contains the mantle and the crust's fragile upper part, the outermost layers of the structure of the Earth. The atmosphere above and the asthenosphere (another component of the upper mantle) below are bounded by it.
The crust of the earth is not a homogeneous substance; it has numerous rock layers on top, granitic and metamorphic rocks in the center, and basaltic rocks on the bottom, like sedimentary rocks.
Two forms of lithosphere exist:
Oceanic: which is connected with and occurs in the ocean basins of the oceanic crust.
Continental: Continental crust is associated with this.
Analyzing on the basis of the given choices we can say:
Option A, Crust - This seems to the most appropriate choice as life exists on the outer most layer of the soil which is called ‘lithosphere’. It is the region which is in the easiest contact with both the hydrosphere and atmosphere and we already know water and air both are essential for the survival of biotic species. However, it is a partial answer and not a suitable choice.
Option B, Upper part of mantle - This can’t be the right because the layers below the uppermost layer aren’t suitable for life to survive and not the part where mantle begins. Though, upper mantle does count into the lithosphere but the answer can’t be completely right unless we include the crust part as that’s the layer where life exists.
Option C, Both A & B - Since, Lithosphere consists of both crust and upper layer of mantle where elastic rocks can be found and some sort of tension is always found. This is the right option.
Option D, Crust & Atmosphere – Lithosphere includes the crust but not the asthenosphere. The asthenosphere is the layer that lies directly below the lithosphere. It is the region where the solid rocks under the influence of extreme pressure and heat flow like a liquid. Thus as the rocks begin to melt into magma, their density isn’t as high as the upper mantle.

Therefore the answer is 3. Both 1 and 2

Note:
Several large complex tectonic plates also consist of the earth's crust.
At an average pace of about 10 cm, these tectonic plates shift slowly but continuously.
Considering this, there was no Atlantic Ocean, and 180 million years ago, North America and Europe together were one continent. Due to the drifting apart from the plates of Eurasian and North America, the Atlantic Ocean came into being.