Which of these processes most likely in the constant formation of earth's crust?

a)the liquid core rising to earth's crust during earthquakes
b)the solid core melting and rising on earth's crust during earthquakes
c)the outer crust dissolving in the liquid mantle during volcanic eruptions
d)the liquid mantle flowing through the cracks in earth's crust during volcanic eruptions

Answer;

The liquid mantle flowing through the cracks in Earth's crust during volcanic eruptions.

Explanation;The Earth’s crust is the outermost layer of our planet and is less than 1% of the entire Earth's size. There is the crust and then the mantle and they both contain different kinds of rocks which make them different to each other.The crust of the Earth is composed of a great variety of igneous, metamorphic, and sedimentary rocks. The crust is underlain by the mantle