The movement of the lithosphere and the arrangement of continents and other features of the Earth is explained by C) the theory of plate tectonics. This theory describes how the Earth's lithosphere is divided into tectonic plates that float on the semi-fluid asthenosphere beneath, and how their movements are responsible for various geological processes, including the positions of continents, earthquakes, and volcanic activity.
While D) continental drift refers to the earlier concept that continents have moved over geological time, plate tectonics is the broader, more comprehensive theory that incorporates continental drift and explains the mechanisms behind the movements.