Which statement is true about the theory of plate tectonics and the theory of continental drift? The theory of plate tectonics shows that continental movements could not have happened. The theory of plate tectonics explains how continental movements could occur. The theory of plate tectonics shows that Pangaea was impossible, but the continents did move. Thery plate tectonics tells exactly where the continents were before Pangaea divided.

The correct statement is: **The theory of plate tectonics explains how continental movements could occur.** ### Explanation: 1. **Theory of Plate Tectonics**: This theory provides a comprehensive explanation of the movement of the Earth's lithosphere, which is divided into tectonic plates. It describes the mechanisms behind the movement of these plates, including processes such as seafloor spreading, subduction, and continental drift. 2. **Theory of Continental Drift**: Proposed by Alfred Wegener, this theory suggested that continents were once joined together in a supercontinent called Pangaea and have since drifted apart. However, it did not provide a mechanism for how this drift occurred. 3. **Relationship Between the Two Theories**: The theory of plate tectonics builds upon the concept of continental drift by providing the scientific basis and mechanisms for how continents can move over geological time. The other statements are incorrect because: - The first statement is false; plate tectonics supports the idea of continental movement. - The third statement is misleading; while Pangaea is a well-supported concept, plate tectonics does not show it was impossible. - The fourth statement is incorrect; plate tectonics does not provide exact locations of continents before Pangaea divided, as it focuses on the processes rather than specific historical positions.