The Theory of Plate Tectonics explains how single mountain systems can stretch between continents, even though the ranges are separated by large oceans.

TRUE

Explanation:

The theory of the plate tectonics states that solid outer crust of the Earth, known as the lithosphere, is separated out into the plates which moves over the asthenosphere, which is the mantle's upper portion that is molten. The oceanic plates and the continental plates, they come together, they spread apart, and interact at the boundaries all over the planet.

These plates move around on the earth's surface by the spreading of the seafloor. Thus when a single mountain system are stretched between the continents, they are separated by the large oceans which is explained by the Tectonics plate theory.