The thing which makes up the Earth's crust and outer part of the mantle make up is called the lithosphere because it is the most rigid part of the Earth's crust.
As a result of this, we can see that the lithosphere is made up of brittle crust and is found in the upper part of the mantle inside the Earth's crust and is the most rigid part of the core of the Earth.
Furthermore, we can see that the lithosphere is made up of basalt and gabbro as they are mainly made up of rocks.
Therefore, the correct answer is lithosphere
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