Answer:
past movement of the Earth's plates is best supported by : seafloor rocks found at the trenches are usually older than seafloor rocks found at the volcanic ridges.
Step-by-step explanation:
- The statement that refers to the origin of the rocks of the earth that have formed the plate tectonics, which is represented by their ages as the spreading of the seafloor is concerned.
- The older rocks found at the margin of the continents and the younger are found near the volcanic ridges and they have formed some 200 million years ago.