Pick up the volcanic rock from the following: A. Granite B. Dolerite C. Basalt D. All the above

The correct answer is C. Basalt.

Basalt is a common extrusive igneous rock formed from the rapid cooling of lava exposed at or very near the surface of a planet. It is usually found in the ocean floor and in large lava flows on land. Basalt is a fine-grained rock with a low silica content. It is dark in color and has a smooth, glassy surface.

Granite is an intrusive igneous rock formed when magma cools slowly underground. It is a coarse-grained rock with a high silica content. Granite is

Dolerite is an intrusive igneous rock that is similar to granite, but it has a lower silica content and a finer grain size. Dolerite is often used as a building stone.

Therefore, the only volcanic rock among the given options is basalt.