The correct answer to the question "Which of the following is an intrusive igneous body?" is C. Batholith.
1. Batholith: A batholith is a large body of intrusive igneous rock that forms from cooled magma deep within the Earth's crust. Batholiths are typically composed of granitic rock and are known for their massive size and extent underground. They are often exposed at the surface after millions of years of erosion have removed the overlying rock layers.
2. Pyroclast: Pyroclasts are rock fragments ejected during volcanic eruptions. They are not intrusive igneous bodies but rather products of explosive volcanic activity.
3. Lahar: Lahars are destructive mudflows composed of volcanic materials such as ash, rock fragments, and water. They are not intrusive igneous bodies but instead result from the interaction of volcanic materials with water.
4. Lava flow: Lava flows are streams of molten rock that flow on the Earth's surface during volcanic eruptions. They are not considered intrusive igneous bodies as they are extrusive features that solidify after reaching the surface.
Therefore, among the options provided, only the batholith (option C) is an example of an intrusive igneous body due to its formation from cooled magma below the Earth's surface.
