Question

which type of rock was the first to exist on the planet?
choose one option
a igneous
b sedimentary
c metamorphic

Explanation:

When the Earth was formed, it was a hot mass. Igneous rocks form from the cooling and solidification of magma or lava. Sedimentary rocks form from the accumulation and lithification of sediments (which require pre - existing rocks to erode). Metamorphic rocks form from the alteration of pre - existing rocks due to heat, pressure, and chemical processes (also require pre - existing rocks). So, igneous rocks were the first as they could form from the initial molten state of the Earth.

Answer:

A. igneous