Question

quiz
question 1 of 10
immersive reader
which type of rock was the first to exist on the planet?
choose one option
a igneous
b sedimentary
c metamorphic

Explanation:

To determine the first - existing rock type, we analyze the formation of different rock types. Igneous rocks form from the cooling and solidification of magma or lava. The Earth's early state was dominated by molten material. Sedimentary rocks form from the accumulation and cementation of sediments, which requires pre - existing rocks to erode. Metamorphic rocks form from the alteration of existing rocks due to heat and pressure, so they also need pre - existing rocks. Thus, igneous rocks were the first to exist as they could form from the Earth's initial molten state without relying on other rock types.

Answer:

A. igneous