Concept:Igneous rocks are formed by the cooling and solidification of molten magma, giving them a crystalline texture.
Explanation:Statement I says igneous rocks are stratified.
This is false because stratification is a characteristic of sedimentary rocks, not igneous rocks.
Statement II says igneous rocks are metamorphosed rocks.
This is false because metamorphic rocks are formed from existing rocks under heat and pressure, while igneous rocks form directly from magma.
Statement III says igneous rocks are crystalline.
This is true because slow or rapid cooling of magma leads to the formation of crystals in igneous rocks.
Statement IV says igneous rocks originate from molten magma.
This is true as it is the defining process of how igneous rocks are created.
Therefore, the correct characteristics are III and IV.
Answer:D. III and IV only